A Shaded Pole Motor Sleep Aid Device Drive Circuit
A technology of drive circuit and shaded pole motor, which is applied in the direction of machine/engine, excitation or armature current control, instrument, etc. It can solve the problems of insufficient stability of the power supply, influence on the stable speed of the fan, and complex control system circuits, etc., and achieve white noise Stable and comfortable, reliable speed, simple structure design effect
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[0016] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0017] The driving circuit of a shaded pole motor sleep aid provided by the invention includes a constant voltage adaptation unit 1 and a WiFi circuit 3 , an LED control circuit 4 and a fan motor control circuit 5 electrically connected to a single chip microcomputer 2 .
[0018] Among them, in addition to the inherent transformer, the constant voltage adaptation unit 1 is also equipped with a switching power supply chip for voltage feedback control. Specifically, as shown in the attached manual figure 2 As shown, the primary winding side of the high-frequency transformer T1 is provided with an auxiliary winding, and the AC input voltage passes through the bridge rectifier circuit 101 composed of diodes and the π-type filter circuit 102 to obtain a DC high voltage, and then connected to one end of t...
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