Thyristor controlled motor speed control circuit
Source: InternetPublisher:宋元浩 Keywords: Thyristor motor speed control circuit SCR Updated: 2021/10/08
Thyristor controlled motor speed control circuit
Shown is a circuit in which a thyristor controls the speed of a motor. AC 220 V forms a DC voltage through a bridge rectifier stack and is applied to
one end of the motor. The other end of the motor is connected to a thyristor SCR . As long as the SCR is turned on, the motor can rotate. The conduction of SCR is the trigger signal provided by PUT
. An RC charge and discharge circuit is provided on the SCR side to provide a cut-off drive signal for the SCR, which can control the conduction period of the SCR , so that the speed of the motor
can
be controlled .
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