Remote control dimming and speed regulating receiver circuit schematic diagram

Relevant key device information applied in this article: CD4017 9013 9014 9015 9018 The receiver is composed of a super regenerative receiving circuit, a frequency selective amplifier, a counter, an output circuit, etc. The transistor VT1 and other components constitute the super regenerative detector. The signal sent by the transmitter The audio signal is output after being received and detected by the receiving circuit. The audio signal is amplified by a low-frequency amplifier composed of VT2, etc., and the amplified signal is sent to a frequency-selective amplifier circuit composed of VT3, L4, and C10 to improve the anti-interference ability of the circuit. Frequency selection The circuit consists of L4 and C10, and the resonant frequency is 15kHz.