800_W_LIGHT_DIMMER

Published:2009/7/1 1:17:00 Author:May | From:SeekIC

This wide-range light dimmer circuit uses a unijunction transistor and a pulse transformer to provide phase control for the TRIAC. The circuit operates from a 115 volt, 60 Hz source and can control up to 800 watts of power to incandescent tights. The power to the lights is controlled by varying the conduction angle of the TRIAC from 0° to about 170°. The power available at 170°conduction is better than 9770 of that at the full 180°.



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