Ceiling fan motor drive circuit

Ceiling fan motor drive circuit

Shown is a simple ceiling fan motor drive circuit, which is mainly composed of a power supply circuit, a motor drive circuit and other parts .     The power circuit is mainly composed of power switch SI, capacitor cJ, resistor Rl, Zener diode VS, rectifier diode VD and filter capacitor C2 and other components; the control circuit is mainly composed of transistor VTI, timing selector switch S2. Test machine integration It is composed of circuit IC (NE555) and peripheral related components.     The AC 220 V voltage is stepped down by C1, rectified by VD, filtered by q , and stabilized by vS to output a DC voltage of about 12 V. When the power is turned on, 12 V charges the capacitor C3. When the voltage across C3 rises to the set value, VT1 is turned on, and the ② pin of the integrated circuit IC becomes low level, causing the ③ pin to output a high level, causing rr2 is turned on, and the motor M is energized and rotates.