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看了一下IEC 60950-1 2nd的clause 2.1.1.7裡面有一段敘述:7 p5 i! \6 q* @. Q, z
The relevant time constant is the product of the effective capacitance in microfarads and the0 K, D' C4 }/ Z0 Z
effective discharge resistance in megohms. If it is difficult to determine the effective3 [: r& e- Z& T" x+ f5 S( L4 {4 t
capacitance and resistance values, a measurement of voltage decay at the point of external( z/ ~5 T+ N7 X# }3 G9 `3 g
disconnection can be used. When conducting the voltage decay measurement, the result is
: i9 W9 s! H# Z+ ~2 }4 x9 Ireferred to an instrument having an input impedance consisting of a resistance of
- S+ E) ?- ~9 S% I# z. u5 ^100 M Ω ± 5 M Ω in parallel with an input capacitance of 20 pF ± 5 pF.
7 i/ }0 n$ `! ~$ ^' N3 N' s+ a1 c% z- g不知道這算不算有要求 |
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