In fact, in many precision electronic$β systems such as copying equipment, medi±<cal instruments, etc., λ‌ααit is necessary to widely use low-p± ΩΩower power supplies ← ≤with high voltage an₩€d low current. At the same time, the power modul¶®e system is also required to have l<☆↔ight weight, fast response speed, Stability >ε¥is still a good and reliable feature, so in order ↕₽ to meet this feature, high-voltage pow∞₽ er modules appear.

It is specially desi→' ↓gned and produced a higα¶h-voltage switching power supply for the hi • gh-voltage and low-current low-powδ±er power supply system requi ​→γred by these precision electγδronic equipment, and also conducts variousγ♣  tests on the response characterist₽φ÷ics of the high-voltage &'•power supply. After findi>≤ ¶ng various problems, To make a pow♥☆'εer supply system, it has the characteristi¥☆$₩cs of small size, good stabiε>↔♣lity and fast response speed, which can' ‌​ fully meet the needs of such precision elect¶'×Ωronic equipment, so the hig≤∏‍←h-voltage power supply module is more effe¶δctive.

What is the circuit principle of≥Ω> the high voltage power supply module? In ₽™fact, after the input sign✔≤al of the high-voltage≤β power supply comes f→↓rom the 220V AC mains, after rectifi↕≈✔cation and filtering, it will drive the •‍→high-frequency transformer together with th☆↓γδe output signal of the PWM pulse"<↔$ modulator, and then obtain a high-vol♠&tage power supply through these hig'>h-frequency voltage devices. After rectification §™✔♦and filtering, the DC high voltage power supp•>≠ly is output, so the output←‍♥← feedback signal will be fed bacδ$ k to the pulse modulator a♦ ✔fter photoelectric isolation. Final✔•→ly, by comparing with ↑☆the reference voltage of the error amplifiλδ★>er in the pulse modulator, the output d≥±uty ratio of the pulse modulator i✔♥s controlled to adjust the outpu≥$t voltage.