Digital multimeter, a multi-purpose electronic measuring instrument, generally includes functions such as ammeter, voltmeter, ohmmeter, etc., sometimes also called multimeter, multimeter, multimeter, or triple meter. One of the most basic functions of a DMM is to measure voltage. A typical DC voltage source is a battery, such as a car battery. AC voltage is usually produced by a generator. The most common source of AC voltage is the wall socket in your home. Some devices convert AC to DC. For example, electronic equipment such as televisions, stereos, video recorders, computers, etc., convert AC to DC through a rectifier that plugs into a wall socket. DC voltage is the power source required for these electronic devices. Testing the voltage is usually the first step in solving a circuit problem.
