800_W_TRIAC_DIMMER

Published:2009/7/12 22:34:00 Author:May | From:SeekIC

Simple circuit uses Motorola MBS-4991 silicon bilateral switch to provide phase control of triac. 1-megohm pot varies conduction angle of triacfrom0o to about 170o, to give better than 97% of full power to load at maximum setting. Conduction angle is the same for both half-cycles at any given setting of pot.-- Circuit Applications for the Triac, Motorola, Phoenix, AZ, 1971, AN-466 p 5.



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