Triac and UJT Dimmer (CB857E)

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Published: Monday, 27 February 2017 00:00

Written by Newton C. Braga

This high power dimmer uses a unijunction transistor to trigger the triac. The triac is choosen according the load power. TIP series triacs are suitable for this application. The triac must b mounted on a heatsink. Only incandescent lamps can be used.