15~20ma电流(万幸!)要用3u400vac电容(大枣样大)啊!!
而且用变压器大概是不行了,为了保证电路稳定性
正在考虑如何减小220v时候的电流,增加22v时候的电流
我用两个同规格5v稳压管并联分流,大家看看行不行???
还望各位先学不吝赐教!!!
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