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本帖最后由 zhangfc 于 2015-6-26 19:16 编辑
: y; l. R0 A3 M. [ ]让梦飞翔 发表于 2015-6-26 16:58 % ]0 W8 d4 Y! P' p/ ?" g
还没查到哪里有的买? ! n9 q4 E: q0 q" y) o
这个东西,我们实验室有。好像从顺德商检局或质监局买的。
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这玩意只能测220V以上的,120V左右的测不了。
4 c/ R3 N0 ?. fDSH-0716
: S0 g; z' {! ^' `( t9 W WIf the relevant standard does not contain contradictory requirements, a voltage probe
' g( k- O# D8 }+ T" B1 rhaving an input impedance of 100 MΩ or greater in parallel with an input capacitance of- X6 D6 m1 A& [; T0 b5 M
25 pF or less, shall be used for this test.% x; a6 C& K* K. r# y
For other (automatic) equipment with special measurement techniques equivalent- \9 i, @1 B- P
measures shall be taken to ensure comparable results.
, k! a6 q4 [$ x* M, l8 ^Explanatory Notes:
T- N( Q( L% T/ M- CThis issue was raised at the 2008 CTL meeting after discussing the proficiency testing
. l7 k# U- t9 n, w- Sprogram on plug discharge 2007/2008. Participants used several different probe
" x0 K. ~+ n8 q' O) Limpedances, which caused inconsistent results. |
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