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Low Power AC/DC General Motor Thyristor Control Circuit

2016-09-04 22:34  
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Low Power AC/DC General Motor Thyristor Control Circuit
This circuit is used in the case of AC/DC general series wound motor stepless speed variation. Armature winding is in series with field winding through the thyristor. By the single-phase half-wave phase-shifting commutating control method, the thyristor's control angle could be changed by adjusting the 500ω potentiometer. So it can make the rotate speed be stepless adjusted from zero to the maximum value. This circuit is widely used in small household appliances such as blenders, sewing machines, hand drills and woodworking machinery.