When the mains switch connected to the transformer voltage through the input voltage into the city after the power into the pre regulator circuit, pre regulator circuit is preliminary voltage to the output voltage to, its purpose is to reduce the voltage drop between the input and output power adjustment tube, reduce the power consumption of large power adjustment tube to improve the efficiency of power supply, DC power supply, pre regulator generally consists of thyristor stepless adjustment type phase shifter with relay switching transformer output voltage tap. After pre regulated power supply and filter
DC voltage ripple of the basic stability obtained after relatively small after high power adjustment in the control of the control circuit of the tube accurately and promptly asked the top pressure will be DC voltage regulator precision and performance standard after filter
The filter can get what I need in order to get the output DC output voltage needed I value or the steady flow of current value, we also need to output voltage and current values for sampling and transmitting it to the control / control / protection circuit, output voltage protection circuit will detect the value of and the current value of pre drive voltage stabilizing circuit and high-power transistor to DC power supply can output the values of voltage and current and voltage / current setting circuit set value, at the same time when the control / protection circuit detects the abnormal voltage or current value under such circumstances will start protection circuit the DC power supply into the protection of the state.