Description
1.0 INTRODUCTION
1.2 BACKGROUND OF THE STUDY
Digital voltmeter is an instrument that measure voltage or voltage drop in a
circuit. Digital voltmeter uses solid-state components and display values digitally.
Typically, Digital voltmeters (digital volt meters) can be used to locate excessive
resistance that may indicate an open circuit or ground. They are also used to
identify low voltage or voltage drops that may indicate a poor connection. The
positive lead is connected to the circuits positive side and the negative lead is
connected to the circuits ground. The digital voltmeters internal resistance is the
impedance, which is usually expressed in ohms per volt. This amount is relatively
high in order to prevent the device from drawing significant current and
disturbing the operation of the circuit being tested. The sensitivity of the Volt
meter determines the range of voltages that digital voltmeters can measure.