60W/120W超聲波清洗發生器PCB驅動電路板，用於清洗機

The small ultrasonic generator circuit board provides an adaptive tracking circuit for the resonance frequency of the ultrasonic generator, including a phase locked loop unit, a phase shift control chip and a frequency control circuit. The phase shift control chip outputs a pulse signal, which is processed by the phase comparator II in the phase locked loop unit to output a pulse signal, and the pulse signal is output to the frequency control circuit through the phase locked loop unit; The frequency control circuit includes a switching element.