SG3525-dat

Pulse Width Modulator Control Circuit

Features

  1. Onboard SG3525APWM control chip;
  2. Onboard 78M05 voltage regulator chip, providing reliable reference voltage;
  3. Two precision adjustable resistors on board, R3 controls the duty cycle, R4 controls the frequency;
  4. Onboard power indicator;
  5. Working voltage: 8~12V;
  6. Frequency range: 200HZ-100KHZ adjustable;
  7. Duty cycle: 0-100% adjustable;
  8. Output amplitude: 5V;
  9. Board size: 30.8 (mm) x18 (mm);

SCH

  • https://www.youtube.com/watch?v=T8C7dp0U3Ig

APP Drop-in-Water Short Protector

  • Pin 1: Short circuit sampling + of the rear stage
  • Pin 2: Short circuit sampling 1 of the rear stage
  • Pin 3: Water protection
  • Pin 4: 8-16V power supply positive
  • Pin 5: Shunt or constantan wire battery negative terminal
  • Pin 6: Shunt or constantan wire sampling load terminal
  • Pin 7 and 8: Drive output

ref

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