SPEED_CONTROL_SWITCH_CIRCUIT

Published:2009/6/23 22:03:00 Author:Jessie | From:SeekIC

A center-tapped 240-V transformer is used with two SCR devices to provide rectified ac (pulsating dc) to MOT1. Q1 is a UJT ramp generator used to generate trigger pulses for SCR1 and SCR2.



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