900W 25KHZ 40KHZ Ultrasound Power Supply Generator PCB Circuit Board For Industrial Cleaning Machine

The frequency controlled ultrasonic circuit driving circuit board applies PWM phase shift power regulation technology to control the output power of the power supply. The frequency controlled ultrasonic circuit driving circuit board obtains the phase difference of voltage and current through digital phase discrimination technology as the feedback signal of the circuit resonance state, and combines with the STM32 main controller for PI control to adjust the output frequency of the PWM wave to ensure that the circuit always works in the resonance state.