In fact, in many precision electronic systems such as copying equipment, medical instruments, etc., it is necessary to widely use low-power power supplies with high voltage and low current. At the same time, the power module system is also required to have light weight, fast response speed, Stability is still a good and reliable feature, so in order to meet this feature, high-voltage power modules appear.

It is specially designed and produced a high-voltage switching power supply for the high-voltage and low-current low-power power supply system required by these precision electronic equipment, and also conducts various tests on the response characteristics of the high-voltage power supply. After finding various problems, To make a power supply system, it has the characteristics of small size, good stability and fast response speed, which can fully meet the needs of such precision electronic equipment, so the high-voltage power supply module is more effective.

What is the circuit principle of the high voltage power supply module? In fact, after the input signal of the high-voltage power supply comes from the 220V AC mains, after rectification and filtering, it will drive the high-frequency transformer together with the output signal of the PWM pulse modulator, and then obtain a high-voltage power supply through these high-frequency voltage devices. After rectification and filtering, the DC high voltage power supply is output, so the output feedback signal will be fed back to the pulse modulator after photoelectric isolation. Finally, by comparing with the reference voltage of the error amplifier in the pulse modulator, the output duty ratio of the pulse modulator is controlled to adjust the output voltage.