Field output circuit:LA7838

LA7838 (LA7837 can also refer to this circuit, the only difference between the two is the output current)

Pin 1: 9.2V——VCC1 power supply

Pin 2: 4.8V - vertical trigger input

Pin 3: 4.8V - monostable multivibrator time constant setting terminal

Pin 4: 4.8V - field amplitude control terminal

Pin 5: 0.5V——50/60HZ conversion field amplitude stabilization control terminal (50HZ: L 60HZ: H)

Pin 6: 4.8V - sawtooth wave voltage forming terminal

Pin 7: 4.6V——Field output AC and DC feedback input terminal

Pin 8: 24.5V——VCC2 power supply

Pin 9: 1.9V - pump power output

Pin 10: 1.5V——Anti-self-excitation negative feedback input terminal

Pin 11: 0V——Ground

Pin 12: 15V - field scan output

Pin 13: 24V - field output power supply