Pulse signal hypnotic circuit

Pulse signal hypnotic circuit

Shown is a pulse signal hypnotic circuit. As can be seen from the figure, the circuit is composed of a pulse oscillator, a flip-flop CD4017 and
a pulse output circuit BGI. Plug in the headphone power supply to turn it on. At the moment of power-on, the power supply provides a reset pulse to the CD4017 trigger through cl to
reset the CD4017. So the CD4017@ pin outputs a high level, BG1 is turned on, and the LED lights up. At the same time,
the pulse oscillator composed of CD4069 starts to oscillate. This signal is sent to the CD4017@ pin as a clock pulse. After the internal trigger circuit works, The pulse signal
output from the @ pin is amplified by BGI and added to the earphones. It is like raindrops, eye-catching. Internal function diagram and related pins of CD4017