Motor control circuit with the transistor and the single thyristor

Published:2011/6/23 2:30:00 Author:TaoXi | Keyword: Motor, control circuit, transistor, single thyristor | From:SeekIC

This circuit uses the transistor phase shifting trigger and the unidirectional thyristor to control the full wave voltage of the series excitation motor circuit, so we can control the motor speed in the wide range. The resistor R5 is connected in the unidirectional thyristor main circuit in series to form the negative feedback, this method can steady the speed. The numerical value of R5 is 0.1～1Ω. The function of the diode rectifier bridge Br is to change the AC into DC.



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