voltage won't increase to 180v

來源: 於 2012-03-15 12:15:06 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

check his meter if he set to measure the peak value (1.4 times rms value) instead of rms value (120v is rms value, and the normal meter will measure this value). He may get a bad meter or a really fancy one that measures more than he can understand.