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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 z; h, B) n1 K- t9 k( M
The relevant time constant is the product of the effective capacitance in microfarads and the+ \- i) y; C9 B d M3 Q
effective discharge resistance in megohms. If it is difficult to determine the effective' r( }* i$ X# m0 P/ Q& ?
capacitance and resistance values, a measurement of voltage decay at the point of external
' _0 c# _' T/ e" edisconnection can be used. When conducting the voltage decay measurement, the result is
, ?. v7 |9 k1 v' I8 Q0 n4 x m& ]5 Mreferred to an instrument having an input impedance consisting of a resistance of
- d; N: R- @4 t" S# _100 M Ω ± 5 M Ω in parallel with an input capacitance of 20 pF ± 5 pF.) o# n L% Y5 g% U3 Q. O: m* l/ ?, Y
不知道這算不算有要求 |
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