Txooj Xwm Voltmeter

Kev Haujlwm voltmeter, haum rau tsev kawm ntawv chav ntsuas kom ntsuas qhov ntsuas hluav taws xob hauv DC ncig, kom ua qauv qhia nrog lub ntsuas cua.– Nrog kev tiv thaiv Circuit Court ntawm silicon diode ntawm 'meter' ib pab tub rog, pub dawb los ntawm kev sib tshooj ntau dhauTshiab teev qhov tseeb ntawm?