Power analyzer
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A power analyzer is an instrument that measures various electrical circuit variables. It is digital in nature. It allows one to use the console that it provides in any method that is practicable. There are several switches (push buttons) that help find the values of desired circuit variables. The power analyzer can be used to replace ammeter, voltmeter, wattmeter, oscilloscope and all other devices used for measurement in the circuit analysis. It is a complete device in itself and the connection is very simple.
The world's first digital power analyzer was developed in 1988 by Voltech Instruments.