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Bathroom exhaust fan automatic control circuit
Source: InternetPublisher:太白金星 Keywords: Automatic control circuit BSP delay circuit potentiometer Updated: 2020/10/27
When a person enters the bathroom, the exhaust fan is automatically put into operation and stops automatically after the person leaves. It
uses a monostable delay circuit composed of 555 time base integrated circuit A. Adjust R2 and Ct to change the delay time. P is
the sensing electrode piece. Adjust the potentiometer RP to change the sensitivity of the device.
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