SG3525 PWM Controller Module

SG3525 PWM Controller Module – Adjustable Frequency. 

• Onboard SG3525A PWM control chip
  
• Onboard 78M05 voltage regulator chip, provides stable reference voltage
• Onboard two precision adjustable resistors:
  R3 controls duty cycle
  R4 controls frequency
  Onboard power indicator LED
  
• Operating voltage: 8–12V
  Board size: 30.8mm × 18mm
  Frequency adjustment range: 200Hz – 100KHz
• Output amplitude: 5V