Calculators›Electrical engineering›Voltmeters and series resistors

Electrical engineering

Voltmeters and series resistors

Voltmeter range extension, series resistance, and meter movement voltage.

Electrical engineering

Voltmeter series resistance

Rs = Rv(U / Uv − 1)→Electrical engineering

Voltmeter total voltage

U = Uv(1 + Rs / Rv)→Electrical engineering

Voltmeter movement voltage

Uv = U / (1 + Rs / Rv)→Electrical engineering

Voltmeter range multiplier

m = U / Uv = 1 + Rs / Rv→