SCR Silicon Controlled Rectifier, it generally pre-dates PWM (Pulse Width Modulated) drives.
One advantage is you do not need a large DC supply like you do with PWM.
Using a a phase shift control method, it uses the controlled rectifiers in a full wave bridge to vary the AC input energy to the DC motor.
Al.
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CNC, Mechatronics Integration and Machine Design.
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E. |