Milliammeter EDM

Lub hom phiaj dav dav Milliammeter, haum rau tsev kawm ntawv chav ntsuas los ntsuas ntsuas kev sib tshuam tam sim no. – 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?