Single-ended flyback switching power supply circuit diagram of capacitance-type pressure clamp

Published:2011/3/22 21:48:00 Author:Nicole | Keyword: switching power supply | From:SeekIC

As shown, when the VT1 turns on, charging capacitor C02, C01 discharging, the primary winding N11 of the transformer Tl is applied to about l / 2 of the input voltage; when VTl stops, the voltage of N11 is polarity reversal, the emitter voltage Uce1 of VT1 reach the input voltage Ui, the diode VD4 turns on, Ucel is clamped; Similarly, VT2 turns on, C02 discharging, C01 charging, the primary winding N21 of T2 is applied to about 1 / 2 of the input voltage; VT2 stops, the voltage of N21 is polarity reversal, after VD3 turns on , Uce2 is also clamped to the input voltage Ui.



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