THYRISTOR_TRIGGER_PULSE_GENERATOR

Published:2009/7/7 3:02:00 Author:May | From:SeekIC

Used with thyristor speed control for 2-hp shunt-wound DC motor. Circuit provides train of pulses with variable delay with respect to zero-crossing instants of AC supply, for feeding to cathode and gate of thyristor to vary duty cycle. Use Mullard BFX29 silicon PNP transistor or equivalent, and any small-signal silicon diode. Output pulses are suitable for triggering all types of thyristors up to largest. Article also gives motor control circuit.-F. Butler, Thyris-tor Control of Shunt-Wound D.C. Motors, Wire-less World, Sept. 1974, p 325-328.



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