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There are no definitons such as "high voltage" or "low voltage" according to IEC/EN 60335-1. A circuit which is not isolated from supply mains by a safety isolating transformer or covertor is always considered as dangerous voltage circuit. I thinks the poster want to tell us the distance between mains circuit and circuit at safety extra-low voltage, right? But it's total wrong, we can't get the means. 1 @; |" o$ J4 `4 d; f5 ]
. n) l% p) l3 M& R$ CPS: Sorry, 在公司打我们汉字特别麻烦,五笔没有,这个输入法太恶心了,大家见谅  |
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