Principle circuit diagram of ceiling fan electronic governor

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This paper introduces the principle circuit of the ceiling fan electronic governor. As shown in the figure below, R1, C1 and L are absorption networks to prevent the spikes generated when the thyristor is turned on and off from interference with other electrical equipment. VR, R2, C2, R3, C3 form a tunable integration circuit that controls the conduction angle of the bidirectional thyristor VS to control the output voltage.

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