Motor speed control

Universal motors and shade d-pole induction motors can be easily controlled with a full-wave Triac speed controller. Q1 combines both the triac and diac trigger diodes in the same case. The motor used for the load must be limited to 6 amperes maximum. Triac Ql must be provided with a heat sink

With the component values shown, the Triac controls motor speed"from full off to full on.

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