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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:
6 \4 b% K9 \7 ^% l2 ^. ` JThe relevant time constant is the product of the effective capacitance in microfarads and the) h# |( s( R* j' u0 w; f; w
effective discharge resistance in megohms. If it is difficult to determine the effective4 u$ F6 n3 S' l* n
capacitance and resistance values, a measurement of voltage decay at the point of external
. `1 }2 m" K* j0 ~9 {4 v1 cdisconnection can be used. When conducting the voltage decay measurement, the result is
7 z, h2 S* C& t" l$ W" k8 S. Yreferred to an instrument having an input impedance consisting of a resistance of
/ C9 [! n- E! O+ \) I: _' E100 M Ω ± 5 M Ω in parallel with an input capacitance of 20 pF ± 5 pF.6 U0 ~7 s& x9 Y; j2 ~( I2 y# O
不知道這算不算有要求 |
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