A feedback control corcuit is presented to solve the problem of electric isolation between the input and output of high voltage feedback circuit used in the ESA of fuze.

Improvement of feedback circuit on WSE-315 TIG welding machine;

Taking the feedback circuit especially the light feedback combining the SCM control technology,the design guarantees the steady power supply and the light output,assures the request that the xenon lamp radiates steadily.

And a precise feedback circuit based on TL431 and resistors network is devised to meet the requirements of high voltage and high precision of the power supply.

At the same time, a more practical voltage feedback circuit is formed by adopting the photoelectric coupling circuit.

The charging technique with L-C constant-current converter is adopted, and the repeated charging and discharging process of the device is controlled by voltage feedback.

This paper introduces and compares the circuit of voltage feedback in the PWM controller of the current mode,designs a kind of circuit with voltage feedback of UC3846 based on the current mode,which satisfies the stable output in the high frequency circuit,nonlinear load circumstance.