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Y 電容特性5 ~' f6 d- Z! W) G3 e2 N/ u
This use of a Y-type capacitor requires that the capacitor have the following qualities:
, c( X( p/ G1 v" ]4 f- Very high breakdown voltage, so the capacitor case can end up being quite large.
- Larger capacitance value than the winding-to-winding capacitance of the transformer.
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0 [8 }1 R/ _- ]5 F/ R+ Z$ nThe capacitance value is not always very large, typically being only on the order of nF. The capacitance value represents a trade-off when we start to look at noise control versus safety, the latter of which relates to leakage current.
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+ J `, k8 q/ q5 X6 {- ?) ]圖示說明- ]) Q0 h' L; m" y% C! c! R
The Y-type capacitor in this circuit (C13) bridges the primary and secondary grounds.
" M9 F! B8 f2 N0 t" w; |0 z) Y, b) Z
 + ^% }: w6 Z( p* B
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发表于 2008-4-7 13:59
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发表于 2024-9-13 19:18
