a voltage controller, also called an ac voltage controller or ac regulator is an electronic module based on either thyristors, triacs, scrs or igbts, which converts a fixed voltage, fixed frequency alternating current ac electrical input supply there are essentially two types of voltage controllers single phase voltage
commutation in dc machine or commutation in dc generator or motor types of dc motor separately excited shunt series compound dc motor
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a dc generator is an electrical machine which converts mechanical energy into direct current electricity.above figure shows the constructional details of a
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construction of a dc machine construction of dc motor, constructions of dc we have seen earlier that the basic nature of e.m.f duced in the armature
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