| The paper makes a complete theory analysis for the operation of the LCD nondissipitive snubber used in the forward-reverse-combined converter. The influences of capacitance and inductance of the snubber on the circuit operation are studied. Their design criteria are also derived. Then, I take advantage of the studies conclusion to implement a PWM switching power supply. The practice proves the theory is correct, and the performance is good. In the same time, 1 design a kind of ratio driving circuit and apply it to my switching power supply, the effect of which is excellent. I suggest these all can be applied in the industry practice. |
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