LINE_VOLTAGE_COMPENSATION

Published:2009/7/13 22:05:00 Author:May | From:SeekIC

Can be used with either half-wave or full-wave phase control circuit to make load voltage independent of changes in AC line voltage.P1 is adjusted to provide reasonably constant output over desired range of line voltage. As line voltage increases, P1 wiper voltage increases. This has effect of charging CT to higher voltage so more time is taken to tagger UJT. Additional delay reduces thyristor conduction angle and thereby maintains desired average voltage.-D.A. Zinder, Unijunction Trigger Circuits for Gated Thyristors, Motorola, Phoenix, AZ, 1974, AN-413, p 4.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/LINE_VOLTAGE_COMPENSATION.html

Print this Page | Comments | Reading(3)