Nkọwapụta Voltmeter

Ntule voltmita, nke kwesịrị maka ụlọ nyocha ụlọ akwụkwọ iji tụọ voltaji na kọntaktị DC, iji gosipụta ya na onye nrụpụta ihe.-Nke nchebe circuit nke sịlịkọn diode na mita ekike, free si bufee mmebi-Nzuo zuru oke nke?