Electronic pulse fishing machine circuit

Circuit working principle: SC3525A is a PWM chip from Silicon General Semiconductor Company of the United States
. Pin 1 is the error amplification inverting input terminal, pin 2 is the error amplification non-inverting input
terminal, pins 5 and 6 are timing terminals, pin 7 is the discharge terminal, and pin 8 Pin is the soft start terminal, pin 9 is
the PWM compensation input terminal, pin 10 is the shutdown signal input terminal, pin Il is the output A,
pin 12 is the ground terminal, pin 13 is the output stage bias terminal, and pin 14 is the output B. Pin 15 is the bias
voltage access terminal, and pin 16 is the reference voltage output terminal. There is a totem pole
amplifier circuit inside the integrated block , which can directly drive the power field effect transistor.