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电源测试！参考！

enchanter 发布于2004-2-17 19:09 1139 次浏览 3 位用户参与讨论   [复制分享主题]

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<SPAN style="FONT-FAMILY: 宋体"><b>负载性能测试</b></SPAN>2 e# M4 I7 r- I) E& e, r! J$ t
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">电源的负载性能决定了它的实际输出功率的大小，负载性能差容易产生输出电压的波动，对电脑的稳定性和设备的安全都会构成威胁，通过下面的负载测试能找出那些电压下跌明显的产品，从而弄清这些电源的大致输出功率，这是一个大家十分期望的测试，各个“选手”将在这里一决高低而来不得半点虚假。</SPAN>7 i% y7 l, Y" S
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">由于电脑中各个输出端功率的使用情况并不均衡，所以测试时还要针对</SPAN><SPAN lang=EN-US>+3.3VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">、</SPAN><SPAN lang=EN-US>+5VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">和</SPAN><SPAN lang=EN-US>+12VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">的测试电流进行均衡，并根据</SPAN><SPAN lang=EN-US>ATX</SPAN><SPAN style="FONT-FAMILY: 宋体">的规定进行分配，最后确定高负载时的接入总负载在</SPAN><SPAN lang=EN-US>240W</SPAN><SPAN style="FONT-FAMILY: 宋体">左右，电源</SPAN><SPAN lang=EN-US>+3.3VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">端大约要输出</SPAN><SPAN lang=EN-US>10</SPAN><SPAN style="FONT-FAMILY: 宋体">～</SPAN><SPAN lang=EN-US>12A</SPAN><SPAN style="FONT-FAMILY: 宋体">的电流、</SPAN><SPAN lang=EN-US>+5VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">端输出</SPAN><SPAN lang=EN-US>16</SPAN><SPAN style="FONT-FAMILY: 宋体">～</SPAN><SPAN lang=EN-US>17A</SPAN><SPAN style="FONT-FAMILY: 宋体">的电流、</SPAN><SPAN lang=EN-US>+12VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">端输出</SPAN><SPAN lang=EN-US>10A</SPAN><SPAN style="FONT-FAMILY: 宋体">的电流，而低负载下接入的负载功率为</SPAN><SPAN lang=EN-US>120W</SPAN><SPAN style="FONT-FAMILY: 宋体">，各项电流输出减半，这样就能很好的考验一个电源的负载能力，并能正确体现电源在实际使用中输出峰值功率和平均功率时各个输出端的电压情况。</SPAN>  j5 C+ T5 a+ Z5 g4 [3 Z

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% b# W  T- H: f<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">测试中充分考虑到电源连接器接触电阻导致的损耗，并采用多组并联的方式加以克服，同时杜绝负载内部短路等问题，因此下面的测试数据能够充分反应电源的实际情况：</SPAN>
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<TABLE cellSpacing=0 cellPadding=0 border=1>
" m; ^" L  ^1 e6 M3 C<TBODY>( d$ p* \+ M, H" r
<TR>) u0 V4 g; q: I1 {  Q# z
<TD vAlign=top width=568 colSpan=4>
2 E$ ?6 Y7 n8 }8 w$ z/ {<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">高负载（</SPAN><SPAN lang=EN-US>240W</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>
$ h0 f& S3 [2 g+ D. i+ X. H6 O  X; J# k! E" A
</TD></TR>  c. z* p+ R) e7 V
<TR>; |* A5 }# q& g+ @
<TD vAlign=top width=142>- F( q- J; U& |- {" a5 o0 d0 K# S; v  O
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">电源输出端</SPAN>
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) a; a: C% C3 d3 K8 f, W+ N</TD>
. f! H# W$ Y5 Q! G1 |2 ?<TD vAlign=top width=142>0 J1 Z( o% j$ b1 d! U
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>+5VDC</SPAN>  E& C! J; ]  }1 B- S0 O

4 L- `! o$ Z! y/ a</TD>
' I1 e" i! B& Q; _* p<TD vAlign=top width=142>
, ]" u$ c& A. _2 d$ E3 C' s, P<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>+12VDC</SPAN>
2 F  V- b5 P5 j# I7 \& k3 _0 s6 n% ?. L" ?8 C) L- z! D
</TD>1 ]  R1 W# V  ]- X
<TD vAlign=top width=142>
6 [; g# w$ V8 j" g7 @<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>+3.3VDC</SPAN>4 K- ~& j8 a8 H; i6 w- f5 M

1 |. P' G, b; Q* t& x</TD></TR>
. p/ P2 w2 H- j- Z* m& v5 d<TR>4 b# Q8 p  N. I2 x6 Z& }3 P
<TD vAlign=top width=142>3 M4 i. f, G7 l. d  b0 }6 \+ d2 m' D
<P class=MsoNormal><SPAN lang=EN-US>ATX</SPAN><SPAN style="FONT-FAMILY: 宋体">标准允许的浮动范围（</SPAN><SPAN lang=EN-US>V</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>
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</TD>
- n1 d. ~: A5 Z# j4 x<TD vAlign=top width=142>
: H2 C3 u* o( q4 m' B8 s, Z7 @<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">±</SPAN><SPAN lang=EN-US>5%</SPAN><SPAN style="FONT-FAMILY: 宋体">（</SPAN><SPAN lang=EN-US>4.75-5.25</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>8 B1 @+ h1 E: p6 w

8 V3 g9 G# O, J" X</TD>
% ~$ X6 p* u7 ~# r6 ^2 u: X8 l; B<TD vAlign=top width=142>+ I7 u- ]. f$ }. l! S1 q  k+ Q6 U
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">±</SPAN><SPAN lang=EN-US>5%</SPAN><SPAN style="FONT-FAMILY: 宋体">（</SPAN><SPAN lang=EN-US>11.4-12.6</SPAN><SPAN style="FONT-FAMILY: 宋体">），</SPAN>& C' d8 \! ]  U% \1 ^" H! s" Y  _$ P

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' k0 Q7 R8 ?+ S5 }<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">峰值输出时允许±</SPAN><SPAN lang=EN-US>10%</SPAN><SPAN style="FONT-FAMILY: 宋体">的浮动</SPAN>
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" H# s2 `8 @' ^</TD>+ c( |2 f/ }5 [6 p3 a( ]2 a; _
<TD vAlign=top width=142>2 D7 s0 e% A) @0 R& ]# M# m
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">±</SPAN><SPAN lang=EN-US>5%</SPAN><SPAN style="FONT-FAMILY: 宋体">（</SPAN><SPAN lang=EN-US>3.135-3.465</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>5 \" B6 n% U. o% o/ L
5 _9 Z! |/ W( q  ?! F4 e1 r' _
</TD></TR>
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<TD vAlign=top width=142>- i( [$ }' L4 a% L
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">联志霸王龙</SPAN><SPAN lang=EN-US>LZ-300-P4</SPAN><SPAN style="FONT-FAMILY: 宋体">（水晶版）</SPAN>- Z5 `3 ], g' p# t

3 r) b( x% A- p! A</TD>
# s4 x! h- `$ J7 O6 L3 j9 Y9 d<TD vAlign=top width=142>
, h. \# k( H7 M<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.81</SPAN>
: S; a/ F, q7 A0 L* E6 b! @5 u' B  h0 S6 ~( Z
</TD>, d5 r( h& T% a; d- ?$ c6 n
<TD vAlign=top width=142>" N  T  Y0 i/ ]6 h* o* A
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>12.03</SPAN>
9 O: _' x4 k/ Y% c* v$ c
* L7 ^3 ~; H9 b7 a+ j3 @</TD>. O: u5 _& w3 U; ~1 o
<TD vAlign=top width=142>. x" D* ~$ j% ]/ O% R
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.06</SPAN><SPAN style="FONT-FAMILY: 宋体">（</SPAN><SPAN lang=EN-US>L</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>
! M7 L" ~8 d; w6 f2 F7 ~( y
7 P: o$ k. S+ A</TD></TR>
' V: Q' i  c9 K2 w0 r3 I<TR>
' B% c. z/ i. x) i7 Z" z<TD vAlign=top width=142>
5 H3 R  E/ ~, K, y; _9 e<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">金河田海象</SPAN><SPAN lang=EN-US>350WB P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>
5 V0 _9 s) u2 k, R0 A( ^5 L+ i# l
. {  `/ P" ~1 g1 O0 D3 J  Y! `</TD>
/ x% T# }4 {8 }! @, e9 X3 p- {, u<TD vAlign=top width=142>% ?; Q/ M- d! H  p. b9 J0 G
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.87</SPAN>
* k& N& n) t$ f8 ~1 t6 u1 a! o0 `2 q4 Z2 c1 M" T2 S$ @
</TD>9 r* r( p# J/ t% D* s  F
<TD vAlign=top width=142>
( Q! g5 w  R, \3 S<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>11.87</SPAN>
$ R* l0 L0 \( i' c7 l) J
( q- r8 Y2 c6 Q# {</TD>( B: X( Y6 O5 D% a
<TD vAlign=top width=142>
) L7 q# p# S; b7 u8 n<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.09</SPAN><SPAN style="FONT-FAMILY: 宋体">（</SPAN><SPAN lang=EN-US>L</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>
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: t1 a2 V5 P3 m7 J# k. I</TD></TR>/ q- r9 C& p- i" l* _
<TR>- O( j! h9 H) K, M% K/ {2 d3 ]- p
<TD vAlign=top width=142>
) q" E+ L3 }5 |% Q; _<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">七喜大水牛</SPAN><SPAN lang=EN-US>P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>
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</TD>, V, \5 Z1 k% G8 N/ p
<TD vAlign=top width=142>
/ y3 t4 o, f( g/ W5 l4 I) X<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.66</SPAN><SPAN style="FONT-FAMILY: 宋体">（</SPAN><SPAN lang=EN-US>L</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>
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. b2 \: I& ^! T9 e- C' F</TD>
% Z1 H6 Y6 @! Z% i( n5 i( W2 s<TD vAlign=top width=142>; h  c( n- Y+ m% h( X$ R$ w2 d+ ]
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>11.74</SPAN>' _; l* ]! q/ ^0 b- {4 y
* `2 ]+ ]7 Z4 \. B" J
</TD>
) |* |, k0 |4 z  N" f<TD vAlign=top width=142>
) Y4 K/ Y) k% K) c, q' v<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.14</SPAN>* Q5 Y( b% V% Q6 Z
3 _2 |1 F0 _9 Y$ E/ ]. M
</TD></TR>8 a! z8 T2 b% A) @4 \4 W9 v
<TR>: q8 Y( v% I5 E2 X# X7 P
<TD vAlign=top width=142>: }+ t9 ~- y+ R" o7 `
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">七喜大水牛电源</SPAN><SPAN lang=EN-US>300</SPAN><SPAN style="FONT-FAMILY: 宋体">型</SPAN>
! y) a  e5 @9 J. ~) {( D/ x3 q: N) V, H* O7 Z, A
</TD>6 H6 {. S: o6 J) r
<TD vAlign=top width=142>/ E8 T1 F/ d" y+ |+ H- v
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.80</SPAN>
; }2 M. w3 {4 ]) s; B# V
2 B2 p% w2 M! u( B) t6 A& j- {</TD>
  \4 @" q: x; ?<TD vAlign=top width=142>+ w% f3 X. }# F' q
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>11.61</SPAN>7 k9 s8 s: A5 w6 O# O
0 x, s, Z; f+ B  L/ {8 t- ]  A
</TD>
' w( s, h: C- p, @9 i1 a<TD vAlign=top width=142>
$ a: L) i2 A2 F' j0 w/ X$ h1 [<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.20</SPAN>
  m7 ^/ a; r1 ~" w) v: O; \' b# N( i; ]8 S1 a8 y
</TD></TR>3 J& e9 c( a, [! w; o9 z4 @
<TR>
; I/ i& K* A$ N  p; H2 l<TD vAlign=top width=142>
5 O6 l; Y$ X. f9 O; M. f: `<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">航嘉</SPAN><SPAN lang=EN-US>LW-8388S 300W</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN># f6 E( }8 d4 p; b% i! H4 q
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</TD>2 s: c& |& W# G7 C0 n) g/ Z! q" N
<TD vAlign=top width=142>
2 _. N; a: k* i# b' j+ a<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>5.00</SPAN>, H3 I( E2 K$ M+ N7 Q

: q: O! \" }7 U</TD>  U- a$ f$ Z; I% ]5 N
<TD vAlign=top width=142>
4 p2 A5 U1 L/ c: j<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>12.02</SPAN>% h' s4 k; X, {6 U" p5 b

! ?  H$ \( z0 n* f& t</TD>2 U1 a2 I" v4 U( B% D
<TD vAlign=top width=142>2 D( @0 `4 P* r- W6 f( r. N1 i5 t
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.28</SPAN>/ R1 U6 s# z9 [: B  e5 o: H, W

, L8 {; w! P9 }</TD></TR>
( [2 @( e: {' e( r9 L& s3 x<TR>, S& l& H+ c6 q
<TD vAlign=top width=142>
. ?0 ^7 c3 k" H. }<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">百盛</SPAN><SPAN lang=EN-US>BS-2000+ P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>$ j$ m, Q# g7 Z' q+ v# x2 ]. }/ z
4 I+ y( C! X7 j$ C7 N8 f
</TD>
" y# F' T$ P" c( v9 k- H6 J8 l8 X1 Y<TD vAlign=top width=142>
- w# p. i/ Q% {7 i<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.86</SPAN>
1 K% F5 A( _' a  ?) X0 z# Y5 s% E+ x) {* l4 S
</TD>
) G  T7 V% r, F1 r2 @  f: i<TD vAlign=top width=142>  m) u6 r% K6 ^( T
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>12.02</SPAN>2 M7 D8 p3 w4 V' q& d8 b+ m
! R1 H# i* d# o' I: R% E' L
</TD>) d( w& r8 b8 i1 T- j- l* G
<TD vAlign=top width=142>
( v" W, ^5 {; }6 M9 H' \: Z% o<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.22</SPAN>
3 q! L1 L9 c+ }. @$ a/ z
. {4 C- d% Q7 @# F6 |</TD></TR>
8 v9 v, i+ T- D4 ?$ w2 B<TR># g' ]0 c& ~* q
<TD vAlign=top width=142>
$ J& |9 z: c; V  J$ ]<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">长城</SPAN><SPAN lang=EN-US>ATX-300 P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>
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' K! A( P6 P6 Q- D2 [' d3 c</TD>, o" K" g# g6 w0 e# v& g
<TD vAlign=top width=142>
, @$ J* M0 l4 c# p8 S<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.78</SPAN>
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; P: D9 M* M3 t! z</TD>
) J0 I: D$ Q. \, o& Q<TD vAlign=top width=142>
4 }( ]7 w# B9 o; Q<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>12.19</SPAN>/ B& I4 ?1 V+ F5 @& v, k

7 v. @' T. H& ^7 m2 D8 b</TD>
& E2 j4 D# v. O( J3 [<TD vAlign=top width=142>
# ]* A  m: l6 i3 p/ x" h8 |5 z5 |3 T<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.24</SPAN>( r" \* Z* L3 t  l

( w* M. J- l/ E8 v</TD></TR># N7 y7 D: s7 F) E4 T
<TR>
3 n: i' U. e2 S& _2 v. B<TD vAlign=top width=142>
3 |* V5 t% [) A3 l6 h3 i<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">世纪之星黄金版电源</SPAN>
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- m4 `- k: J. H& c$ s</TD>
, ]' Q' s1 c. B4 U1 V<TD vAlign=top width=142>, X7 B- ^  J, V
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.78</SPAN>
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</TD>/ A8 U' q6 n" V
<TD vAlign=top width=142>7 L, W2 b; \. A7 A" w; i0 z$ R
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>11.33</SPAN><SPAN style="FONT-FAMILY: 宋体">（</SPAN><SPAN lang=EN-US>L</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN># r8 T& R( ?4 {5 K1 M) X

; C9 }9 n' J/ e3 C5 A</TD>
, T7 {! E- D3 G% _0 c' v, n% X( z<TD vAlign=top width=142>
& h) O4 L3 O& o' H<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.15</SPAN>) C! s  x* G4 r7 r
$ ?9 K/ n/ ?6 s7 k% I: H0 }! |
</TD></TR>- }, C. M, s! B- Y8 B7 B4 y5 D" E7 `
<TR>
7 R. \3 A/ V: {2 O5 E. w3 C; U: t<TD vAlign=top width=142>6 z% ?  O. m& p7 a. t5 [2 S& b
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">银河动力王黄金版</SPAN>  F! T9 {+ l, |2 X! }
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<TD vAlign=top width=142>
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<TD vAlign=top width=142>, d, e. _& t: v
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>-</SPAN>
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6 `. _% J( W! U7 \</TD>
6 w# ]( G8 v& a; u0 `% a  l<TD vAlign=top width=142>
2 ?  k% X. d7 S  X<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>-</SPAN>7 K3 E% [1 T0 {8 Q9 q# J

5 E( y; o/ Q: q, O3 H</TD></TR>
2 q; t# m% D* x% }; a, a<TR>
0 y. ^5 N- W( b" |<TD vAlign=top width=142>. P9 L  Z9 i  B
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">远航电源</SPAN>: J8 b2 l. G3 o* W2 r: x
% D* s; D% H! S" O) j
</TD>
0 ^% O6 `8 L6 j<TD vAlign=top width=142>! T. k" q" r$ o2 v% u# S3 r4 \* q% t
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>-</SPAN>
. s: ~* U% \8 Y) d( V) }5 r9 d* U& @  t
</TD>
5 d) B7 D3 t  E* T0 ~5 c<TD vAlign=top width=142>
$ ?$ M9 k$ p9 v' i; G" g- W<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>-</SPAN>7 |- ?8 L& V- S# t2 {' N

3 e% M4 u  O& \9 J0 K) w</TD>
9 i. A) v) Y4 }: [" m<TD vAlign=top width=142>
2 |( c* U; p" s/ n3 ~0 z* m<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>-</SPAN>
  r2 F# r) J2 ?' k: R
7 }; E1 ~* f7 p  v) y</TD></TR></TBODY></TABLE>, ^5 P$ I2 \; }0 d! v
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">其中（</SPAN><SPAN lang=EN-US>L</SPAN><SPAN style="FONT-FAMILY: 宋体">）表示电压低于</SPAN><SPAN lang=EN-US>ATX</SPAN><SPAN style="FONT-FAMILY: 宋体">规定的范围</SPAN>
+ T: i" `$ w/ M0 d4 ^' ?7 A7 h& S- Q0 X$ B+ A
$ e" b) Q! `8 s% _# K  M
<TABLE cellSpacing=0 cellPadding=0 border=1>
8 G5 f! U5 N' p' ]2 P. Z- G<TBODY>/ q" O4 J* }! N2 B. X8 |( i+ E: j
<TR>$ I/ @6 f9 m9 \' P$ l
<TD vAlign=top width=568 colSpan=4>+ F9 N1 b1 H( e+ u7 ?" L
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">低负载（</SPAN><SPAN lang=EN-US>120W</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>
. ^8 @5 ^7 ?4 y* B, l4 d. \! d) }& X: a$ Q- V- g& E
</TD></TR>
+ E3 J0 n! [0 R# |& x<TR>
  I$ W" {+ b6 k% Q<TD vAlign=top width=142>
2 n! ?( T3 V% Q9 V& D& [' V<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">电源输出端</SPAN>
- f1 g( e/ V! I! \" m0 w: x
1 l8 ~$ ?) Q" C1 g</TD>
, U2 ]1 z7 f$ T/ U$ ]* n<TD vAlign=top width=142>
& N5 d6 P0 d5 {' m. |<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>+5VDC</SPAN>" A9 D. T# }' b" o
3 l7 T( i& k- G9 o4 e
</TD>3 }% }: _; c9 g$ b% @% `3 o- \  H
<TD vAlign=top width=142>0 g- ~4 A$ |+ [- G
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>+12VDC</SPAN>, b" m1 l6 }, x* _

- @6 X* \9 ~0 X+ Q: s, o" c) `</TD>
0 n5 P( H2 O9 s, Y! `<TD vAlign=top width=142>* u$ f, Z4 n& l! P4 e2 \* I; ?2 X
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>+3.3VDC</SPAN>$ c/ z$ O, z& J
! e+ }) h1 x+ L; [9 d, E
</TD></TR>
- l0 |/ E5 X- W) {: p<TR>
5 ?5 }2 q0 V- ~8 v- @, T<TD vAlign=top width=142>  I( @1 \: \5 _3 ~! H2 L# A# S) c
<P class=MsoNormal><SPAN lang=EN-US>ATX</SPAN><SPAN style="FONT-FAMILY: 宋体">标准允许的浮动范围（</SPAN><SPAN lang=EN-US>V</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>
6 @; E% t. w8 ]+ v9 {$ X& N# }9 I8 O( t; D2 s1 p, ?, F
</TD>* L/ a* M. }+ @7 t1 E: X8 s
<TD vAlign=top width=142>
( z: z9 R- l) J7 J4 L1 V- _* |<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">±</SPAN><SPAN lang=EN-US>5%</SPAN><SPAN style="FONT-FAMILY: 宋体">（</SPAN><SPAN lang=EN-US>4.75-5.25</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>
5 c/ a8 L, `- y8 R8 t+ P
( m$ y: \& D% r6 N* A5 j</TD>
* _# u& B* p9 H, |9 {+ w6 ]$ K9 d<TD vAlign=top width=142>
( U8 F, t& a3 O<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">±</SPAN><SPAN lang=EN-US>5%</SPAN><SPAN style="FONT-FAMILY: 宋体">（</SPAN><SPAN lang=EN-US>11.4-12.6</SPAN><SPAN style="FONT-FAMILY: 宋体">），</SPAN>) H& ^& ]0 C* \' V5 U

' |0 g0 i  B+ V) x/ b- V# O# \( m( L8 |
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">峰值输出时允许±</SPAN><SPAN lang=EN-US>10%</SPAN><SPAN style="FONT-FAMILY: 宋体">的浮动</SPAN>4 x: \2 k2 f# |+ e" B- t/ }- n
- k. V# ?3 |, Z
</TD>
; E, ]% v4 |4 R# G9 l<TD vAlign=top width=142># m- U6 q8 G8 P4 t: ~/ N
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">±</SPAN><SPAN lang=EN-US>5%</SPAN><SPAN style="FONT-FAMILY: 宋体">（</SPAN><SPAN lang=EN-US>3.135-3.465</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>9 b) h5 L2 x8 w3 z! f6 j

+ W' D1 X) R$ x) }! l6 ~" x1 ^</TD></TR>% T" k/ V3 d, G6 X3 X
<TR>
) g0 s8 {2 {1 ]& b% s1 M8 ^2 ]+ I7 T<TD vAlign=top width=142>
' k- H! Z# t1 j" h* `) O- J<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">联志霸王龙</SPAN><SPAN lang=EN-US>LZ-300-P4</SPAN><SPAN style="FONT-FAMILY: 宋体">（水晶版）</SPAN>8 X( a$ Y2 a* h) A
. s' j7 F. N7 k
</TD>8 Y  ?6 S) z* }7 j1 q  D* T$ d
<TD vAlign=top width=142>8 S, h9 g) c( B7 J+ T
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.98</SPAN>; `+ \# m* u- F  x* j! g2 d. A

: _+ a$ P! @; Z: ~* b9 u1 D' d</TD>' C8 `% s" V1 d" f( W3 b7 y
<TD vAlign=top width=142>
& L; a& q' V* a" {+ Z; ]9 ~2 V, C<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>12.11</SPAN>+ \/ }" O9 j7 P4 u
8 F7 ^, O6 I# j
</TD>
; W$ h" I) p1 u0 U8 O<TD vAlign=top width=142>
, w# N  |: ^* I8 H" G/ O& R<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.19</SPAN>2 u  {( C1 N0 [

4 ^" E! g' k5 d</TD></TR>
& j- s; ^2 F" }" }7 H<TR>& x* i8 d4 Z* L3 Z2 R
<TD vAlign=top width=142>
( M: N, D) w; V# S# Q<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">金河田海象</SPAN><SPAN lang=EN-US>350WB P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>
$ D$ D4 x. P4 f: x% C8 I3 Y4 D' B' z% B, d
</TD>
, F6 |5 r0 q, T: U<TD vAlign=top width=142>
2 z* G+ e3 E+ C9 x* s, K<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.97</SPAN>' E2 C1 _' M& F; L, K

/ L9 p$ S. X: J9 |8 h, T; `* K</TD>
' r0 e* C" Z& I: n$ ?<TD vAlign=top width=142>
/ G, `# |2 q; i- k<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>11.89</SPAN>
" ]2 w1 `2 e  \5 w7 m
* C; o8 O- Z9 r1 \3 Q</TD>' d. Z4 L! t( N+ c* h# c2 |/ V8 ~
<TD vAlign=top width=142>
( _9 m( V3 P4 [5 k2 T. u<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.17</SPAN>9 ^( ]6 q5 _# ^

+ O& a( k& z" C</TD></TR>$ e2 A* {1 [+ h5 [: c9 M
<TR>: a' {: F# [8 ]6 c
<TD vAlign=top width=142>
' ?0 N6 a% Q* ]# m* E8 z! Y- `% b<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">七喜大水牛</SPAN><SPAN lang=EN-US>P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>" s5 z" z2 \. o/ }) B. c. q! n3 m/ _
- o8 q. B. y3 u( T& f* I+ W
</TD>+ [* u; j, T4 A; O8 z  n
<TD vAlign=top width=142>
0 K) D$ P% a  l8 _2 a6 R! b<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.90</SPAN>
  m- }0 S1 u7 u  ~2 R% U
3 a# Z$ a$ a6 U& ^. c</TD>
6 u; [/ `; d# p! k<TD vAlign=top width=142>
5 T$ @* B, o) ]1 y( }2 g4 w<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>11.78</SPAN>) f% Y- ?& J, c, d

; d7 u3 P5 B2 r! q* o. M, q( j4 |+ I</TD>
9 N* @+ V& |3 }) f- _7 A<TD vAlign=top width=142>
- m& t# C8 \8 s* ]<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.30</SPAN>
7 f" Q. H4 J% u- t' T- U  ~4 ^# z) ~* i. `* O: f
</TD></TR>
6 h. u& W* `/ ?7 S9 r: Q<TR>
1 d' e2 |$ ^! k$ G- b) S<TD vAlign=top width=142>
# J1 m! a9 a  y5 S8 b7 K0 y3 G<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">七喜大水牛电源</SPAN><SPAN lang=EN-US>300</SPAN><SPAN style="FONT-FAMILY: 宋体">型</SPAN>& w; q1 o% i9 @, b/ a) O

# a. X; i- {/ G/ [( X</TD>
8 l% ~4 N* e+ @/ j% l) s<TD vAlign=top width=142>
) ]7 |% Z* D* U! V<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.99</SPAN>
+ }! M# V. x* s8 O0 f1 t
  G3 g# n8 U; e: |</TD>
0 H2 ?% b' Y" N* g. P, R1 e<TD vAlign=top width=142>7 m2 S- e0 c" Q5 E" f. q
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>11.64</SPAN>& X7 j2 {# t6 _  R. G2 P
4 G! e! k8 X7 r1 X
</TD>6 F+ S% L) B6 R, v+ t; @
<TD vAlign=top width=142>$ |# h* O9 O0 T3 L$ K- f0 r
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.29</SPAN>
% b( B+ o: K. q  V; c: r4 F9 y! _1 u! G) f+ v% u
</TD></TR>/ k# [# G" }  |8 d
<TR>* G& h3 |7 |1 w: a9 l- R9 r
<TD vAlign=top width=142>
4 H- ^3 M1 f# d' @( u1 m, w8 O<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">航嘉</SPAN><SPAN lang=EN-US>LW-8388S 300W</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>
6 S: V6 W* _5 z0 I/ D- J
  V4 c* n+ G! w1 c1 \+ P2 r9 q* j: C) }</TD>8 c: E& P' k6 ^/ g9 Y7 \6 S
<TD vAlign=top width=142>) w$ b# ^6 Q* H9 }4 l
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>5.04</SPAN>
7 L( Q* m  K. R) r; T" B$ J3 j# D& d2 a7 ?0 Q' ^4 z0 b3 ]
</TD>
% O8 T( x6 L0 H; [# Z" C8 l. I: C<TD vAlign=top width=142>
/ Z) [0 }; x. U<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>11.96</SPAN>
: n* o/ G! h6 g1 c& {  S) m& g! X4 D9 w) l4 m
</TD>* T1 h( m! ~/ _* W: b
<TD vAlign=top width=142>
" E* {  E7 ^5 I+ ^( n<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.32</SPAN>* T, ?9 i" f6 O! s' o
7 c. A$ x) x8 I
</TD></TR>0 [( m: o- E+ E* n. R
<TR>
* X, p& A8 R; \! S  p$ J& Y<TD vAlign=top width=142>
& t; O- D+ D7 W: `0 Z4 Z<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">百盛</SPAN><SPAN lang=EN-US>BS-2000+ P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>& N( t* ~- C) Z
% Y# M) t+ V9 K$ P! M  x
</TD>7 |! \4 y- R) P9 o# ~
<TD vAlign=top width=142>3 E# U- k" `8 @$ R/ {" L# G- a
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>5.00</SPAN>; s" c0 W+ ~, i: I
3 `! W1 ^% @0 N
</TD>
2 m0 w  Z2 K' ]; w/ l<TD vAlign=top width=142>& |, M# c! M7 R8 |
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>11.90</SPAN>
! i. P* M( ?) n( l" V( j- Y6 s( ^" B' {* ]/ r( \" ?% z
</TD>3 y# H# o' N3 M) s2 {$ B. Y
<TD vAlign=top width=142>
2 t0 c+ C% M! ^( `: I<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.30</SPAN>
! h* `0 v! h5 @. i) o/ k# y# ~5 H
1 s& J4 h/ L* t# {" }* c</TD></TR>
8 b3 z2 V" {2 N7 Q0 P1 H; S7 l<TR>, Q' g) X8 j1 t' e# k# S; A
<TD vAlign=top width=142>
! |5 j& z; T) ]! _<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">长城</SPAN><SPAN lang=EN-US>ATX-300 P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>
$ b* @: g5 z% [8 _1 q2 o# z5 W+ M8 t/ G9 _
</TD>
; g7 }- x, }- @2 \7 x5 M<TD vAlign=top width=142>
. C: w1 o" G6 q1 T1 n<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.97</SPAN>
+ X. D; v, C$ r' A
. T" z) Y) I1 t, u0 j</TD>1 ~- h9 ?- _+ I; @
<TD vAlign=top width=142>
+ C) I/ D- c/ M4 x; O" U% j<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>12.17</SPAN>: K, h, c$ i$ K# z" R( n. Z! @! z
5 @5 B7 \- {! z+ ~
</TD>
; `0 P2 v3 s, i  K3 q0 ?0 H<TD vAlign=top width=142>
5 V% U% O( \- l* j& ?+ x- X) I<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.32</SPAN>0 e; C% X% G9 G" U4 @7 j  X
/ a9 J# ~. }$ u$ W' M! t  t: f
</TD></TR>' s! d1 f( D+ Z) f
<TR>
3 _  S' \& n" E6 u$ `( }6 S<TD vAlign=top width=142>3 s+ o( A) }/ K# p! f
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">世纪之星黄金版电源</SPAN>' y. P8 X+ q+ B7 R

, [2 X, Z" M: t8 E8 i9 K: n, [</TD>
5 _& v% u: p! L  P- T8 l# W& J<TD vAlign=top width=142>
- l( X6 z  f  R6 K: d9 D8 b<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.94</SPAN>
- r5 r# V+ |" C4 n$ n' b7 ^
1 F, _; i! P3 s! f; V: Y</TD>
, |7 S4 r0 d0 W2 L: W- _8 v8 F<TD vAlign=top width=142>
: d& w, c- R5 v% |4 j1 o<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>11.38</SPAN>( y7 ]- z/ e. y' ~$ ]- C' c4 @
0 G( S4 A: l& P2 `9 {4 f
</TD>
$ `  Z; [/ J7 a3 w! U4 m<TD vAlign=top width=142>  M& w3 E4 U, ]! b4 j2 ^
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.30</SPAN>
' ?: Q  f. [" R3 W4 D1 U# a& b3 U2 V) x0 _
</TD></TR>* n# E) m4 H6 v- v& b. n# |6 ~$ Q
<TR>
- k) X+ v0 E3 L$ n1 C" Z<TD vAlign=top width=142>
7 ?5 V7 V; _- d0 n6 I<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">银河动力王黄金版</SPAN>
2 o) \# M, S  \* C9 @+ y+ ]5 D9 c: J
</TD>
& l) }2 K! [7 F: q3 ^2 B<TD vAlign=top width=142>
5 d, |; a9 U& t! B9 q<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.93</SPAN>3 C" Z1 Q* x& x9 w7 t3 {
0 I+ ]* ^; ?3 O9 W+ A+ V
</TD>
9 G3 w+ M8 N( J4 c! x6 z5 h<TD vAlign=top width=142>& v( V. b* Z) L: @5 E
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>12.15</SPAN>& T1 p/ ^% s7 u3 ^

+ B. l5 O/ l( y" a5 ?4 W</TD>
/ t. D% W* w# t( y1 n. b$ y<TD vAlign=top width=142>
; u, d  s! j6 h<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.24</SPAN>
; l  R- `& S! s4 @9 K0 x: f9 P" e7 H: r
</TD></TR>
! T5 Q& P( D+ t1 C/ Q  x<TR>( m* I+ |! P, I& d4 F! S! @& j
<TD vAlign=top width=142>
/ O2 u& Y/ D/ Y0 L<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">远航电源</SPAN>% ^9 v( y7 d; l1 A. f* j2 B
- [" M  r2 n8 ?  R8 x
</TD>9 Q4 V* D4 K. x  o% u9 ?
<TD vAlign=top width=142>
. c) k9 B* Q1 ]! I# c<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4.97</SPAN>8 [" `% r! v' u, l

# s4 H# u5 y4 k. q: l5 f4 q$ ^</TD>
9 T4 t) P/ K; B: E<TD vAlign=top width=142>
0 }  d6 n. y2 A6 o  H5 Q) D<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>12.05</SPAN>
/ i' j6 d4 Y/ }- L7 Y& x* j# S! m$ {9 X; D, ^' n: y: A
</TD>
) M7 N$ h4 i$ `<TD vAlign=top width=142>
. W# n0 e" x. T2 F. z: K5 O<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>3.18</SPAN>
0 Y9 R! X/ I, B7 p8 E' O) s% d* Z! O2 D3 a5 V
</TD></TR></TBODY></TABLE>& A& W# ?0 E6 r8 U+ C
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">从测试结果看，大部分电源</SPAN><SPAN lang=EN-US>+3.3VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">输出端的负载能力比较差，大功率下电压下跌明显，而</SPAN><SPAN lang=EN-US>+5VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">和</SPAN><SPAN lang=EN-US>+12VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">的各电源下跌幅度绝大多数都在</SPAN><SPAN lang=EN-US>ATX</SPAN><SPAN style="FONT-FAMILY: 宋体">规定的范围内，低负载下虽然有的电源的输出电源同样有所跌落，但比高负载下的情况已有所改善，由此可见，这里的大部分产品并不能够真正满足最大</SPAN><SPAN lang=EN-US>300W</SPAN><SPAN style="FONT-FAMILY: 宋体">的输出功率，有的甚至只能输出</SPAN><SPAN lang=EN-US>160W</SPAN><SPAN style="FONT-FAMILY: 宋体">以下的功率。此外，航嘉</SPAN><SPAN lang=EN-US>LW-8388S</SPAN><SPAN style="FONT-FAMILY: 宋体">电源表现出色，在负载测试中名列第一，而送测的电源中也只有这个电源在铭牌上标出了各端的综合输出功率，可见厂家对其的信心。</SPAN>
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enchanter 发表于 2004-2-17 19:10:02 | 显示全部楼层
<P class=MsoNormal style="TEXT-ALIGN: center" align=left><SPAN style="FONT-FAMILY: 宋体"><b>输出纹波测试</b></SPAN>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">无论是音响使用的线性电源还是电脑使用的开关电源，其输出的直流电中必然含有纹波成分，而</SPAN><SPAN lang=EN-US>ATX</SPAN><SPAN style="FONT-FAMILY: 宋体">标准对电源的纹波大小也作出了规定，过大的纹波会影响设备的稳定性，还有可能造成设备的损坏。</SPAN>
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/ a. V4 W1 p' t<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">测试中在电源的</SPAN><SPAN lang=EN-US>+3VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">、</SPAN><SPAN lang=EN-US>+5VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">和</SPAN><SPAN lang=EN-US>+12VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">上接入</SPAN><SPAN lang=EN-US>120W</SPAN><SPAN style="FONT-FAMILY: 宋体">的总负载，同时用</SPAN><SPAN lang=EN-US>20MHz</SPAN><SPAN style="FONT-FAMILY: 宋体">的示波器测量</SPAN><SPAN lang=EN-US>+5VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">和</SPAN><SPAN lang=EN-US>+12VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">电源输出端的纹波大小，见图</SPAN><SPAN lang=EN-US>4</SPAN><SPAN style="FONT-FAMILY: 宋体">－</SPAN><SPAN lang=EN-US>20</SPAN><SPAN style="FONT-FAMILY: 宋体">，结果见下表：</SPAN>  {7 |4 s+ k: k' ?; B0 Z4 F5 p
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/ p# i1 M* y4 u$ ^<TABLE cellSpacing=0 cellPadding=0 border=1>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">电源输出端</SPAN>  y1 s' E( J; d3 ?
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<TD vAlign=top width=142>
( ~8 Z- q) y/ g) L5 N3 J9 v! Z, t<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>+5VDC</SPAN>5 ~9 u0 D& X( b- W
8 b* i9 T& g% R& y, B
</TD>
" r3 x: u+ s. v0 f<TD vAlign=top width=142>
( n2 b  @% T# O( O3 B$ J<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>+12VDC</SPAN>
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</TD></TR>1 h9 D" K, }1 J% a8 ~
<TR>
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) [5 M3 P$ X* a& W" C- e" E4 Y<P class=MsoNormal><SPAN lang=EN-US>ATX</SPAN><SPAN style="FONT-FAMILY: 宋体">标准允许的纹波大小（</SPAN><SPAN lang=EN-US>mVp-p</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>
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</TD>- w/ u3 h5 Y$ M5 `) _& [
<TD vAlign=top width=142># d; t; o2 h! y  J7 `" M
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>50</SPAN>) z9 J" S* b/ S6 R
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</TD>5 `6 e' p, W! n4 z" j
<TD vAlign=top width=142>' f  F; _6 V( d2 U4 w! D! w: |
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>120</SPAN>
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</TD></TR>% r3 F$ P% C  Y8 y
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<TD vAlign=top width=142>
' w9 W+ u7 {; ~<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">联志霸王龙</SPAN><SPAN lang=EN-US>LZ-300-P4</SPAN><SPAN style="FONT-FAMILY: 宋体">（水晶版）</SPAN>
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</TD>9 D' b9 O' x. H, x$ h) ]' N2 q
<TD vAlign=top width=142>
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</TD>
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<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>55</SPAN>0 h% x  C/ \8 X2 q% n  O
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</TD></TR>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">金河田海象</SPAN><SPAN lang=EN-US>350WB P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>8 u, [" d5 g3 J8 P$ N1 E% m
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</TD>
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<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>16</SPAN># Z1 Y& e/ o6 L! i& v

0 f  M% X, h) _8 X9 O</TD>
8 f* d0 {% [6 s<TD vAlign=top width=142>
! v! D( o$ `' u# d<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>4</SPAN>
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<TD vAlign=top width=142>" E0 ?7 u1 [( I9 o. E6 r0 ^
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">七喜大水牛</SPAN><SPAN lang=EN-US>P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>5 o4 k: Y( Q% W( C* g
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</TD>
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<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>10</SPAN>8 u: Q/ X0 X/ ?3 {* @5 O/ k

* R; u/ _* ]! ]6 n* I" ^% p</TD>
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2 F# D* h. ~+ m5 F! g9 t$ C<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>28</SPAN>
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' o6 r. @% X# T4 W4 y, K) o</TD></TR>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">七喜大水牛电源</SPAN><SPAN lang=EN-US>300</SPAN><SPAN style="FONT-FAMILY: 宋体">型</SPAN>8 u& v/ \9 F* c8 o/ x! U

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<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>9</SPAN>7 s& r/ D8 N1 f& b  p
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</TD>
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<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>38</SPAN>: A" t  \+ n) E9 i" E

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<TD vAlign=top width=142>
' R+ o9 B$ I. t" e' H' E4 J<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">航嘉</SPAN><SPAN lang=EN-US>LW-8388S 300W</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN># p9 t+ l7 i% R! B8 n

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<TD vAlign=top width=142>
1 x) a! L1 m' ?% }6 S<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>6</SPAN>
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</TD>
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<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>18</SPAN>
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% E0 x8 ~7 N% L) K</TD></TR>6 o: v% P1 [( G8 s- v5 a( B% U
<TR>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">百盛</SPAN><SPAN lang=EN-US>BS-2000+ P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>
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5 Z& B* x4 j& B; p$ k/ H<TD vAlign=top width=142>
. p% P. g% q) V# y! J5 Z<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>8</SPAN>( V5 x( z1 u; E. Y" ~, X
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</TD>
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/ S) h! M3 T$ Z: K<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>21</SPAN>6 u8 q8 V0 ]4 H+ [# j
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<TD vAlign=top width=142>+ X1 C" R$ Y, g) a5 F/ E
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">长城</SPAN><SPAN lang=EN-US>ATX-300 P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>
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</TD>, O0 O/ Z/ P: `$ \$ l
<TD vAlign=top width=142>
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</TD>
( q( x+ i6 E' V. V! C<TD vAlign=top width=142>
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</TD></TR>
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<TD vAlign=top width=142>
0 i! z+ F7 A, L. s<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">世纪之星黄金版电源</SPAN>6 `5 Y( A  R( v& h7 {2 ^  t
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<TD vAlign=top width=142>4 f% Z' X+ d7 P) z- l2 t* x
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>17</SPAN>
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<TD vAlign=top width=142>. `2 f& X6 X# Z: o
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>40</SPAN>+ T# O; w' M" H+ ^2 l4 T
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</TD></TR>
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<TD vAlign=top width=142>
4 W* T* S* ?0 a6 g<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">银河动力王黄金版</SPAN>
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0 D( {+ R3 b. M3 l# Q6 ?6 E. V<TD vAlign=top width=142>& w8 \6 P2 L$ J( Y5 ^  Z
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>23</SPAN>7 Y$ R. X3 |1 f/ v7 w

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1 V5 v. I7 Y1 l! J& Q) m  E<TD vAlign=top width=142>
! P' }4 t9 ?2 L1 p8 F- A<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>20</SPAN>1 O- |! }8 {7 E+ l. ?& M0 A5 E
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</TD></TR>
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( Q# y1 ?5 l7 S8 a<TD vAlign=top width=142>
: k  S$ M. t7 M  ~" @" I  k<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">远航电源</SPAN>3 {1 I, s) u" U
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<TD vAlign=top width=142>
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</TD>
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. L; [- c2 g" \  F$ X/ [<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>312</SPAN><SPAN style="FONT-FAMILY: 宋体">（</SPAN><SPAN lang=EN-US>H</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>7 y! ~1 b; d( h8 n+ j
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</TD></TR></TBODY></TABLE>
6 A# [7 |- h; _; [<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">各品牌电源在纹波输出方面成绩都很不错，完全能满足</SPAN><SPAN lang=EN-US>ATX</SPAN><SPAN style="FONT-FAMILY: 宋体">标准的要求，其中金河田海象、七喜大水牛、长城、航嘉、百盛电源的纹波输出都很小，而杂牌的远航电源的</SPAN><SPAN lang=EN-US>+12VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">端的输出纹波竟然达到了</SPAN><SPAN lang=EN-US>300mV</SPAN><SPAN style="FONT-FAMILY: 宋体">，其中的差距实在巨大，要不是电脑使用的设备确实够硬，估计网吧的硬盘都坏过无数遍了。</SPAN>
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enchanter 发表于 2004-2-17 19:10:23 | 显示全部楼层
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体"><b>风扇噪声测试</b></SPAN>  d1 m& S* g& `5 w- `) ]

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! h# z  Q* Z. F6 Y6 q' i7 o<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">电源的风扇不但承担了电源自身的散热，还要将机箱内的热气排除，而具有温控功能的电源能很好的在噪声和散热方面进行均衡控制。测试时给电源在带上</SPAN><SPAN lang=EN-US>120W</SPAN><SPAN style="FONT-FAMILY: 宋体">的负载并工作</SPAN><SPAN lang=EN-US>10</SPAN><SPAN style="FONT-FAMILY: 宋体">分钟，然后再测试风扇的噪声，但这与实际使用仍有不同，安装到机箱后由于机箱温度的影响，风扇的转速会有所提高，噪声也会随之增加。</SPAN>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">由于条件限制无法在消音室内测试，这里只是在固定距离内录下风扇工作时的噪声，然后用电脑进行分析和对比，所以并不能得出风扇噪声的分贝值，但可以了解风扇噪声频谱分布的特性，见图</SPAN><SPAN lang=EN-US>4</SPAN><SPAN style="FONT-FAMILY: 宋体">－</SPAN><SPAN lang=EN-US>21</SPAN><SPAN style="FONT-FAMILY: 宋体">：</SPAN>8 s  L; Q2 Q- j0 p+ |8 S. z
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<TABLE cellSpacing=0 cellPadding=0 border=1>
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<TD vAlign=top width=142>
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<TD vAlign=top width=97>1 [# H( u6 s8 n: b
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">温控功能</SPAN>* u: ^+ K( g" ~1 @* D
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</TD>
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<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">风扇最大电流（</SPAN><SPAN lang=EN-US>A</SPAN><SPAN style="FONT-FAMILY: 宋体">）</SPAN>
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<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">风扇噪声</SPAN>7 A# V+ M) L0 `$ Q0 N
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<TR>
9 \1 S* [& u$ q* s$ Y<TD vAlign=top width=142>7 Y# r$ b% p5 I- e: |; j8 |
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">联志霸王龙</SPAN><SPAN lang=EN-US>LZ-300-P4</SPAN><SPAN style="FONT-FAMILY: 宋体">（水晶版）</SPAN>
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<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">无</SPAN>
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<TD vAlign=top width=144>
+ Q, x8 ^( I2 G<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>0.12</SPAN>8 h( e6 C2 V+ l8 s- X1 k& k2 [

( H+ s! `8 a/ q6 T( U( }# m% R</TD>
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- |% j6 y1 [* A( O<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">略有噪声</SPAN>
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</TD></TR>) p( m3 K+ U# B1 {& H
<TR>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">金河田海象</SPAN><SPAN lang=EN-US>350WB P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>9 T2 j  ^: r' {: @4 \* W

4 u" }6 U$ b( |+ i</TD>
: `: a# [0 {) B2 O<TD vAlign=top width=97>& K, X( ~" A4 \
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">有</SPAN>
! ?) W4 h/ ^1 {& ?+ g' E+ E3 [" j+ e& |- P. w( L
</TD>
# d; ]  A) m2 ~9 _8 o' q- W: R<TD vAlign=top width=144>
- f1 s+ @% X7 m7 y5 U<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>0.24</SPAN>
' c9 V- U) u8 b$ ~3 Q2 \( l
, [/ o0 l6 x; T# Q& }</TD>
/ r" C# j+ y- X# D+ n9 R4 d  A* n: U<TD vAlign=top width=185>4 M) W9 j0 l8 l& l8 L( ~
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">比较安静，但风扇有异响</SPAN>2 M! o# f& M' s
2 m# @& o5 ~' V( x
</TD></TR>6 T  D7 P/ u4 F
<TR>
8 S9 N. d2 z7 U<TD vAlign=top width=142>
; Z9 [" Y/ G, V4 M; h. ~  l<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">七喜大水牛</SPAN><SPAN lang=EN-US>P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>! ~% B# S2 ^& v' M
7 n. V# d3 Y( V* p* B
</TD>
+ i' ?0 W( J. P6 L. {<TD vAlign=top width=97>
3 l3 H/ ^! o6 s% P  V: i" n2 {<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">有</SPAN>" }: r4 g; O( E% ]6 z. J% s% J. u

( d5 {% h0 V& b* @</TD>
) C& x8 _# \. {+ _* l<TD vAlign=top width=144>9 C& }+ c5 L  O. r' ?. U5 r
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>0.15</SPAN>
0 ?8 v8 J; \' O6 q7 S- \
3 ]7 m& {1 @- s: H: E  t' Q</TD>
6 y# R! {9 m7 \2 C<TD vAlign=top width=185>9 V& R+ s1 l2 a2 y5 u
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">十分安静</SPAN>
; Q8 r/ o8 d% m' ]6 ^. b5 ?4 w5 U
</TD></TR>5 U" g2 ?7 h5 Q. `- s, Y% R3 R
<TR>
2 V; L4 n8 y, Q) u7 g: E/ w; w<TD vAlign=top width=142>
# |# H$ W: N* j- f<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">七喜大水牛电源</SPAN><SPAN lang=EN-US>300</SPAN><SPAN style="FONT-FAMILY: 宋体">型</SPAN>
$ e2 W+ g/ l' \! G+ q* {" U. W/ u2 a- v9 j9 @+ I
</TD>9 E, T& d* k# @7 j
<TD vAlign=top width=97>
5 e4 d8 U8 i5 n, ^, K- ^4 `<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">有</SPAN># o1 M1 ?: K8 J* l. E/ G6 d/ s; _
  m. l4 y4 l+ K
</TD>: U5 O2 J5 l$ r( G& _
<TD vAlign=top width=144>+ k/ [; Y" B, H7 U
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>0.18</SPAN>7 ^5 w  |% l2 S) [
, V7 Z/ n8 C1 ^5 v# _) M9 X0 M
</TD>0 [1 g* n" `2 J2 \0 j/ o
<TD vAlign=top width=185>
+ G! M' p/ s4 E1 y! M4 y+ d<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">启动时噪声很小，转速增加后噪声较大</SPAN>; O+ ?3 {( b! |$ Q' t3 G5 D6 v

9 s; w* b. @2 Z' V+ w</TD></TR>
" \9 Y9 A% q9 {! ^0 l<TR>: ~- P  M5 {: m' e% d8 n
<TD vAlign=top width=142>
. O0 z0 F1 o3 Q<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">航嘉</SPAN><SPAN lang=EN-US>LW-8388S 300W</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>
3 m: N: G7 a. `3 S4 b; G7 T$ O8 V" L
* @, P& @+ A( c' P' w9 @. f5 v</TD>
; D8 i/ r5 ~: V) W% [# }<TD vAlign=top width=97>; X9 }$ S. H/ C, {
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">有</SPAN>
' {0 W2 ~: V* \" ]+ f; U; G& D0 z- |4 f
</TD>5 _: l2 i: U2 F- x( w
<TD vAlign=top width=144>( C" E2 q, d' ~5 m( M/ l/ S8 s
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>0.14</SPAN>
% [0 s- W2 A0 L8 ~; E- f4 h* L" L" D9 E
</TD>2 n( q! `" m" N* l: N6 H
<TD vAlign=top width=185>- D3 W& p2 h! [  L4 F" q5 N) A
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">噪声较大</SPAN>8 i( e' D9 Q6 R! H. E: J
. C; Q! O9 W' m4 F. {2 L/ p: R- P  v
</TD></TR>
, X! N3 c6 g& k9 g  d3 u  j' x+ p<TR>0 ^. W6 r, ^" |8 V
<TD vAlign=top width=142># S: c8 `" Q2 E3 Y9 K' v
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">百盛</SPAN><SPAN lang=EN-US>BS-2000+ P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>
$ D' ^* p" V2 v. q' v" O. g9 P" `% N" D2 `/ e1 [. g" m) |; `
</TD>
. `( f. A: `( |, p8 |<TD vAlign=top width=97>
9 k$ a$ M7 y: i. x, d1 ]6 k, i% j<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">有</SPAN>
; u+ l/ j% g; o1 m8 p* |% r) k/ q& |, O5 i* P, u; ?, d1 }% U
</TD>
; B/ }1 X  B# q# t8 ~& K<TD vAlign=top width=144>
$ N9 w/ Z# R; V) k! N/ d<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>0.08</SPAN>, }8 W1 _# k9 a9 u
- f+ m% u1 a1 n" |1 Z& q0 p
</TD>
1 O, P2 S; D2 ?0 F& I% f<TD vAlign=top width=185>2 w- ~4 n- N3 L% ^+ Y$ Z( I
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">略有噪声</SPAN>
( n: q, G9 P! I) w6 R6 q9 N* b3 s3 Q5 w
</TD></TR>0 N+ X# H9 J( V
<TR>
0 a; D5 d! Y( ]5 H' u' H0 s<TD vAlign=top width=142>
3 Z- A! z& G& d& R2 P1 q7 m<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">长城</SPAN><SPAN lang=EN-US>ATX-300 P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>
6 n' p, T6 d' x. u# i. E1 U2 z4 J% t
</TD>* d0 d+ C% f+ k5 `5 `' i6 [  G
<TD vAlign=top width=97>" j* }3 i" i: f* H( C
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">无</SPAN>8 G6 y& f7 q0 b+ Y
* D& N4 X% \8 N$ S) l* w
</TD>
0 C$ F! T. \1 c" W6 N/ o<TD vAlign=top width=144>5 L/ V! h2 n& h& B) ?) a7 r
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>0.12</SPAN>. P8 J% s" O7 b$ i: ~

& C8 U- L1 H3 F! X</TD>
5 S: l  G% ?2 L<TD vAlign=top width=185>8 W  x- W9 T$ |1 u! i4 `! c
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">略有噪声</SPAN>/ j  P9 L$ B. S# q9 s" W! F0 T

6 K: E  C' y" M5 y9 i. T</TD></TR>
0 p9 K# N/ F/ R. C2 U<TR>7 t/ T6 L, l9 R
<TD vAlign=top width=142>, l! |! g6 u- w8 G, e4 V0 T
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">世纪之星黄金版电源</SPAN>* P! k  q: N* v& s9 a2 ?
- ~0 G! i, o+ @# {3 a4 S4 p' p
</TD>
! Y) ^: Q) a  u  F3 u' F8 @" q<TD vAlign=top width=97>
$ }# J: A" |9 R- e<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">无</SPAN>
9 a4 O4 k/ n5 Q7 u: I& l2 l' g$ a$ _" C# a% Z
</TD>  J% p2 e& G7 j, v; |- T! b
<TD vAlign=top width=144>! F1 h9 O) u- R
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>0.11</SPAN>% Z. [0 n# I( b) M3 t7 _

$ ^4 D5 h- m) E$ {</TD>
# C; F" ]8 [8 S3 @5 R# V<TD vAlign=top width=185>! \2 H' p3 `# B9 K
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">略有噪声</SPAN>$ o, d# r& Q& O1 Q2 n( T
1 W$ {) u. H' U
</TD></TR>
$ Q  R! f2 C  d. _( N  ~/ U( @<TR>
# R5 j1 A6 x# ]2 n- m- w<TD vAlign=top width=142>5 S. o2 v9 c& }% n
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">银河动力王黄金版</SPAN>
$ t! f# G; d6 _( }0 E0 r% \( u- Y
4 W3 U, q( U6 [- D& _$ o</TD>. P7 @$ W" `4 o0 j4 `
<TD vAlign=top width=97>. d1 ~/ P# V/ b  C9 L) v2 p4 j
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">无</SPAN>
) E2 s2 m  D0 V) ?! a  L
5 J4 D7 u0 q: Y/ A( u( d</TD>8 {& k* @2 z: G( x, F. C
<TD vAlign=top width=144>; c$ @; x! q3 j) }4 F7 f. `
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>0.14</SPAN>
' u9 V" ~: U4 Y& n4 M4 t8 o- {' _+ W
</TD>5 u7 u) A6 s, i- G$ j: Q" T1 \
<TD vAlign=top width=185>
, Y9 f  _3 ]9 {% d<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">安静</SPAN>
2 }, t* n  \! c8 y7 U
2 I/ e2 X7 x% S% b3 Z5 U</TD></TR></TBODY></TABLE>* E6 Z/ i: h1 k% I# l+ |' o; e2 c
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">金河田海象电源就如同其介绍的一样，风扇的噪声比较小，不过大水牛</SPAN><SPAN lang=EN-US>P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源的风扇噪声更小，其他如银河动力王也表现不错，大水牛</SPAN><SPAN lang=EN-US>300</SPAN><SPAN style="FONT-FAMILY: 宋体">型电源的风扇在测试前已经使用过一段时间，此时噪声已经明显增加，航嘉</SPAN><SPAN lang=EN-US>LW-8388</SPAN><SPAN style="FONT-FAMILY: 宋体">的噪声也算略为明显的一类，希望改进。</SPAN>
7 t& [, I, W' a6 B. L$ r
2 S/ {4 R$ I, p4 x+ ^9 n/ \7 J- E/ x- ?9 ~5 t5 E, {
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体"><b>短路保护</b></SPAN>" q+ e. r3 I2 n% s/ o* h) \4 ]
; }$ `, o( `* A2 O0 k
+ e0 O6 P$ G; S- d8 h
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">电源应该具备多种保护功能，如过压、过流、短路保护等等，其中以短路保护最为常见，当输出端意外短路时瞬间会流过非常大的电流，如果电源不对其进行保护则会危害电源自身的安全，测试时在电源端串接</SPAN><SPAN lang=EN-US>120W</SPAN><SPAN style="FONT-FAMILY: 宋体">的负载，分别用短路线短接</SPAN><SPAN lang=EN-US>+5VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">、</SPAN><SPAN lang=EN-US>+12VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">和</SPAN><SPAN lang=EN-US>+3.3VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">的输出端，看看电源能否正常保护，以及保护后能否正常恢复，在测试中没有起到保护作用的在下表中用“不灵敏”来表示：</SPAN>: k: H6 J' ?0 g: z

  F- [! Z- d9 I0 a6 F3 H) C+ b4 Q- {  A+ M( r" b: A
<TABLE cellSpacing=0 cellPadding=0 border=1>
' y/ {! E2 g* `5 y% V6 u; _  z<TBODY>
+ ~" r5 t4 b, M4 k  d+ k<TR>( k) f. @# G  F! `0 d2 P: H1 ~
<TD vAlign=top width=142>         </TD>- X) h* Y2 I7 j1 W# U# v
<TD vAlign=top width=142>- R" F) l9 X8 e0 S$ B; @: l
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>+5VDC</SPAN>
" T) e7 |. A4 t3 y/ v1 _! Z/ \
2 _1 ^% L  o$ R1 j0 Z</TD>* T6 \2 N- c5 H3 [1 |2 V7 W
<TD vAlign=top width=142>
: u* y# W2 ]% j: z  u8 x<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>+12VDC</SPAN>* K4 K; j! C8 z) u( W; a# @
/ `0 X& Z6 ]# B. f5 ?1 t0 ~9 o8 ?
</TD>
# U5 K4 i# A9 R# s( c<TD vAlign=top width=142>
7 l+ J, U" j5 f! P6 S<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN lang=EN-US>+3.3VDC</SPAN>7 w$ X$ q8 w* ]6 ]- E5 g8 t# R
/ ~9 b  H1 u; n( i/ @8 z" j7 P
</TD></TR>
1 H+ U) L8 M( O7 m' `<TR>' S, o  U( ]: ^, N' U6 e
<TD vAlign=top width=142>
0 g6 _& G& e5 H<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">联志霸王龙</SPAN><SPAN lang=EN-US>LZ-300-P4</SPAN><SPAN style="FONT-FAMILY: 宋体">（水晶版）</SPAN>
7 f3 @0 K. z% t  x4 H( @, z' A" p5 j' Z8 r+ k# z. D- a
</TD>
& e) U6 ?$ V2 o0 f7 A" Y<TD vAlign=top width=142>
, A: K& t7 `: S6 v<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>
! \- m+ C& u7 U; j
& x/ N! l" C: `, |0 Q: j</TD>
0 |/ G0 g& [- J<TD vAlign=top width=142>
% u5 X& S" F8 g- Q3 Q3 l6 ~<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>; T: k" w  @- S+ ^, ]6 U
! N) v7 c* H& O5 }% T# _1 z
</TD>, g5 L/ ], t1 e; a
<TD vAlign=top width=142>! ]$ J( ]. J5 M4 f1 k) ]7 O. s' Y
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">不灵敏</SPAN>: q8 W5 m& e3 W; K$ ?. B
! M7 `' R5 d2 T4 l9 F$ z# X* B
</TD></TR>) r2 p% q  k9 ~" \* k( R  ^
<TR>
  K$ @. z1 E. k) L<TD vAlign=top width=142>0 g2 C2 Q9 e0 T0 O
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">金河田海象</SPAN><SPAN lang=EN-US>350WB P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>) F5 h$ @/ l" \/ y, A  W8 M+ e) r- V  S
; x" b( G5 K' e& L8 i  Z% G
</TD>
* L: e) a5 j7 Y& L" i" e- W+ m<TD vAlign=top width=142>
# W) X* W. T7 n6 @<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>
5 }2 i2 `$ {4 Q# p* \
4 l$ c3 j# ^* m3 f9 m) f3 Z, }- V6 G! z</TD>
4 _- k3 S" }1 @* G<TD vAlign=top width=142>) O1 r. H" u, K1 d
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>
/ U& i4 s* }6 K# A8 W% r7 A" X9 o' Z. z
</TD>
# L5 X2 E1 F6 T$ b<TD vAlign=top width=142>
1 a  V- @% j7 N<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">不灵敏</SPAN>
  x) T/ c3 i* F+ u5 t$ w& ~. b) C/ V9 e% f
</TD></TR>; b( X" N# K9 `! t
<TR>5 I' k2 b* ^. u/ F+ ?, q1 e
<TD vAlign=top width=142>6 D* ?: S- X' S" h/ l
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">七喜大水牛</SPAN><SPAN lang=EN-US>P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>
4 ~0 D* v! I- J1 \& |6 _& ]
* u2 A4 |3 w8 d6 D</TD>8 y% g2 u- f' I3 ]" }) U
<TD vAlign=top width=142>  ?* K: C" V- D6 ~9 w* [
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>
4 A7 v6 Q+ l2 G
2 S$ V' P  G/ }7 X: i7 Q</TD>0 T+ S. Y+ l; [" c% A0 ]
<TD vAlign=top width=142>
# i+ p9 B* g+ l3 r<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>/ N3 {/ H% H* J4 B1 ]

* `' e' K% l0 j+ k) Q9 G) }5 y</TD>. J5 r7 H) f3 [1 q" y7 ]' u1 D
<TD vAlign=top width=142>: |! W  {/ e2 A) |, D1 |
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>, X) \, z' s6 P
* M6 W) c/ O' G" o% H1 F" \
</TD></TR>  ~% h5 F+ K. O! S3 H  z
<TR>* e6 {5 S) ~3 ~8 x2 ?, C
<TD vAlign=top width=142>% @, `' q6 \) i/ Z; s7 x! _
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">七喜大水牛电源</SPAN><SPAN lang=EN-US>300</SPAN><SPAN style="FONT-FAMILY: 宋体">型</SPAN>1 l0 V) L# z- y( m6 `8 I0 ?" i  o3 b; d! ^
- `. M2 C# F5 {, j- x% N
</TD>) t6 ~  W5 u. \' P5 p
<TD vAlign=top width=142>
, l5 n' {) v4 |9 n* Z( O' E/ P<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>; e- ^6 S& Y, c0 v( w; G
/ U; ]3 r1 }, D
</TD>
; _# n% H* B& \/ e* H$ D" H<TD vAlign=top width=142>: ?0 C" f3 Q4 K9 }/ |
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>
& O, x( n$ F$ ~; l% U. C0 O
6 ^+ H6 Y2 M( N( N+ C</TD>4 ~* x% m# z7 V( F5 s; m. c# u& ?7 i
<TD vAlign=top width=142>. \. y  E, z9 P. [2 Q/ I' [
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>
$ k& j1 w% R6 ^, b5 r  j# \3 d
7 ^& h+ x6 k& z% `1 F</TD></TR>0 w) H4 E0 W/ ^+ H. x
<TR># l. u; e) u/ ~& f- S
<TD vAlign=top width=142>6 H" ~, D* W: ]' X5 x( l/ B. F
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">航嘉</SPAN><SPAN lang=EN-US>LW-8388S 300W</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>% p' X9 G5 K6 w

: e# U- X( s- t# G. V6 y1 a7 i0 j3 P</TD>8 o+ h/ {/ f! g6 {. O" f* W- b
<TD vAlign=top width=142>
9 Q. }# x3 ]4 P+ u9 K$ S# b& n<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>- H* \0 T$ g4 G6 j
" D  v  j9 Y; _# \2 |) g2 @" [
</TD>/ i. j! I, y: {0 l+ m! ]6 W3 z
<TD vAlign=top width=142>
7 v: C4 X  E% Q/ A. U) z<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>
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<TD vAlign=top width=142>
" G; ?* @# M. u<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>9 T2 c, a1 y5 U8 w1 V! l  p
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</TD></TR>  g) w% w' V9 \8 A
<TR>
. j/ ]! X' V  J. M( W<TD vAlign=top width=142>  r5 G' z9 u" \( {  P* k
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">百盛</SPAN><SPAN lang=EN-US>BS-2000+ P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>0 b1 u$ Z% G2 L3 e/ m

. K* E9 u  V% w4 Q* s% f</TD>
! K5 i' }- W7 R1 _3 ]<TD vAlign=top width=142>4 Z& K2 K% N) q* ~; ~8 e* o
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>2 ~' }- Q* M% l* X
: S6 k0 ?) A' B4 x0 V1 J
</TD>1 f8 B+ P+ h, m, F0 }: z: Y
<TD vAlign=top width=142>
% \' p: J2 f! ]& x, M! Z<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>
5 G  q0 j/ Y9 X! q7 R/ k1 z% _  \) _' ~/ P) M! Q4 ?
</TD>. |6 [4 z) f" _# [7 }% M$ z, w0 f
<TD vAlign=top width=142>
* @5 z7 W3 e* K7 u9 a9 e4 G<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>
; i  o  E3 V4 t2 M+ `1 Y2 J" J8 C8 L  `9 {* ]$ k( G+ }
</TD></TR>
/ T/ Z  @+ j7 F( \4 B<TR>
" P6 l3 v+ J1 m7 U& H- g+ q. J) \' d<TD vAlign=top width=142>0 i. o0 O- Z, `- `
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">长城</SPAN><SPAN lang=EN-US>ATX-300 P4</SPAN><SPAN style="FONT-FAMILY: 宋体">电源</SPAN>( S- T0 g* ]; S6 {/ C  a
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</TD>4 Q8 @: n* a& M: d2 h( G3 |
<TD vAlign=top width=142>
+ S+ ~" `+ x* Z: K  U! y<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>( O8 G& R( ~7 I8 |& I! q5 D: K
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</TD>
6 E7 G/ T: R" b$ Y$ J* C* C<TD vAlign=top width=142>
! q) Q: c5 m! ^, j7 c<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>9 R' _; `+ P/ U5 c

2 s4 Y. ^% |* K2 j( y</TD>( g( c, S5 Q8 Z6 H$ U' r# r
<TD vAlign=top width=142>; k7 K, H) G7 n- F
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">不灵敏</SPAN>
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/ V! Q# G! j# E7 O! g</TD></TR>! ^2 B9 v/ c* a  q4 a8 u+ V5 I: L
<TR>
5 Y) F4 X% ]! n<TD vAlign=top width=142>/ |6 F) q* I  f
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">世纪之星黄金版电源</SPAN>9 U& Y' w( y* ?

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4 i4 M% Y3 [. |' ]3 g% ]<TD vAlign=top width=142>( l) H; ~+ y5 Y, s! w! @
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>  l! [. D9 J/ W4 F
7 |5 X" e& \) C
</TD>" @* |$ X/ O. w* A) A
<TD vAlign=top width=142>
6 E2 [7 u& _- b. k7 t8 u0 P<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>
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</TD>- Q1 x+ k0 @! ~, z2 z
<TD vAlign=top width=142>$ d. @0 \7 D0 _
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">不灵敏</SPAN>
4 q3 ]+ p/ ~. w! {
. }- z2 ~( r, l0 H</TD></TR>
' A. j2 P9 V& j" e* s' B<TR>
- O- \3 v" Z2 D9 I: ?<TD vAlign=top width=142>1 q+ n4 k& j+ J  n4 d& h* j
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">银河动力王黄金版</SPAN>/ L' }  }  G" g- n3 y

: F' ~( ^/ K! W% Z# v7 r# X! }, S</TD>7 E' a6 w0 l! I# }+ y, |  y3 X
<TD vAlign=top width=142>- B, g" x9 [' ?% B8 B0 B# r. s
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>
$ k7 |: ?+ ^  U: k7 |- s
  J, W) q" @$ R, ]0 Z8 i* q+ n  c% O</TD>, [( Y! B3 L' U. N; m7 P
<TD vAlign=top width=142>
8 x8 n5 B* E+ k& P: s1 {<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">保护</SPAN>; r8 n/ K" f* c) b" G
+ `6 I) i+ t# B  a! _" o
</TD>1 \2 x4 k/ p! s* C: D+ B% J4 s, u
<TD vAlign=top width=142>
: J5 \3 x" ?; A6 e9 ]0 H<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN style="FONT-FAMILY: 宋体">不灵敏</SPAN>
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</TD></TR></TBODY></TABLE>9 S$ K7 V; o. a8 K$ g1 ^, B3 U
<P class=MsoNormal><SPAN style="FONT-FAMILY: 宋体">测试中各个电源对</SPAN><SPAN lang=EN-US>+5V</SPAN><SPAN style="FONT-FAMILY: 宋体">和</SPAN><SPAN lang=EN-US>+12V</SPAN><SPAN style="FONT-FAMILY: 宋体">均能及时进行短路保护，不会损坏电源，但有的电源的</SPAN><SPAN lang=EN-US>+3.3VDC</SPAN><SPAN style="FONT-FAMILY: 宋体">端短路保护有些不够灵敏，烧断了数根短路线后就是不会停机保护，不过</SPAN><SPAN lang=EN-US>ATX</SPAN><SPAN style="FONT-FAMILY: 宋体">对短路保护的电流也作出了明确规定，测试中无法准确达到规定的要求，所以测试结果仅供参考。</SPAN>- |0 w! N8 o1 b9 s( q- {# X* ?* T6 C( X3 g
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zhanglei 发表于 2004-2-17 19:25:50 | 显示全部楼层
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% }/ w& a1 S1 W) L1 H. J支持) K  C2 u$ ]2 `+ A. X
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* J  _  Q7 P; Y( M  p顶。。。。。! C" ?, h) o% i+ t4 C# V
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偶还是信赖长城的
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