Polarity transform type and chopped type switching voltage stabilization power supply principle diagram

Published:2011/7/12 1:02:00 Author:TaoXi | Keyword: Polarity transform, chopped type, switching, voltage stabilization, power supply, principle diagram | From:SeekIC

The polarity transform type and chopped type switching voltage stabilization power supply principle diagram is as shown in the figure. When the switching adjustment component transistor VT is in the conduction state, the input voltage Vi adds to L to produce the current, the diode VD cuts off reversely. When the transistor VT is cutting off, the current of inductance L decreases gradually, the polarity of the induced electromotive force is as shown in the figure. This induced electromotive force conducts the diode VD to charge the capacitance C, the polarity of the output voltage Vo of the capacitance C is opposite with the input voltage Vi. When the voltage of the load will fall, the capacitance C discharges the load again. The output voltage Vo will higher than the input voltage Vi.



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