An electrical voltmeter measures voltage or current in a circuit. They come in different formats, including analog and digital, and can be permanent or portable. They are used for circuit testing and can be multimeters. Electrostatic and oscilloscope voltmeters are also available, but solenoid voltmeters are the most commonly used due to their durability.
An electrical voltmeter is an electrical device used to measure the voltage or current moving between two points or contacts within an electrical circuit. Voltmeters come in a number of different formats, each of which is used for different applications. Electronic voltmeters can be analog or digital. They are designed to be subjected to direct contact with electrical energy and energy through a circuit in order to measure the capacitance, resistance, tolerance, voltage and electrical potential of that circuit.
Some voltmeters are created as permanent devices within circuits and placed on circuit boards where they are used to determine the constant current traveling between two points within the circuit. Portable voltmeters, on the other hand, are contained within small, usually portable, devices that use two external contact points. These contact points can be placed on two different circuit contacts to display the voltage or electrical potential of that circuit.
An electronic voltmeter can test the electrical potential of direct and alternating currents. An electronic voltmeter is also capable of calculating both currents for voltage measurements within a circuit. Due to the fact that an electronic voltmeter is capable of measuring different aspects of a circuit and is able to do so regardless of the power supplied to the circuit, such voltmeters are also considered multimeters. The voltmeter is only able to take a measurement when the circuit is completed, which means that power must flow through the circuit in order for the meter to detect the voltage potential of the circuit.
Other uses and applications associated with an electronic voltmeter include circuit testing. The tests check for the presence of voltage or power before an electrical engineer or electrician begins working with the circuit. An electronic voltmeter can also be used to provide students in an electrical laboratory with visual examples of where voltages and energy that could be dangerous may be stored.
However, digital and analog methods are not the only methods of using the electronic voltmeter. There are electrostatic voltmeters, which can measure the electrical potential of a circuit without any physical contact of the wire with the circuit itself. An oscilloscope, for example, is a voltmeter that is considered to be far more advanced than a regular voltmeter because it has the ability to track the number of times a current changes its course or direction in an AC circuit. A typical voltmeter is not capable of taking measurements that quickly.
The most frequently purchased and used voltmeters are referred to as solenoid voltmeters. These voltmeters are durable and capable of withstanding a significant amount of abuse. The durability comes from the simplicity of their design.
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