Meifeng brand electric fan simulation natural wind control circuit
The picture shows the Meifeng brand electric fan to simulate the natural wind control circuit. In the circuit, during the high-level pulse output of the 555 pin 3, the relay coil is electrically connected, the contact K1-1 is turned on, the motor is powered and rotated, and the fan supplies air. The time of rotation t=0.693 (R1+RP1)C3. The charging time of the illustrated parameters, that is, the time for the 555 output high level is up to 22 seconds, and the shortest time is 6.5 seconds, which can be set by adjusting RP1.
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