Explain with the help of a circuit diagram and appropriate waveforms,

Question

Explain with the help of a circuit diagram and appropriate waveforms, how an SRC can be used for motor speed control. Suggest the modification in the circuit to turn it ON beyond 90° phase of the input ac cycle.

07 Jan 2025

Answer :

Word Count : 347

An SRC (Silicon-Controlled Rectifier) can be used for motor speed control by adjusting the phase angle of the input AC voltage. The principle behind this control is that the SCR allows current to pass through only when it is triggered at a specific point in the AC cycle, thus controlling the effective voltage supplied to the motor.

### Circuit Diagram:
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