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Chapter: Measurements and Instrumentation - Electrical and Electronics Instruments

Rectifier Type Instruments

Rectifier Type Instruments
Rectifier type instruments are used for measurement of ac. voltages and currents by employing a rectifier element which converts a.c. to a unidirectional d.c. and then using a meter responsive to d.c. to indicate the value of rectified a.c.

Rectifier Type Instruments

 

Rectifier type instruments are used for measurement of ac. voltages and currents by employing a rectifier element which converts a.c. to a unidirectional d.c. and then using a meter responsive to d.c. to indicate the value of rectified a.c.

 

The indicating instrument is PM MC instrument which uses a d ’Arsonval movement.

 

This method is very attractive since PM MC instruments have a higher sensitivity than the electrodynamometer or the moving iron instruments. The arrangement which employs a full wave.



 

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