| 摘要 |
<p>PROBLEM TO BE SOLVED: To simplify the circuit constitution of the control circuit of a one- converter-system charger, and improve efficiency. SOLUTION: A one-converter-system charger is composed of a diode rectifying circuit 20, a reactor 4, diodes 5 and 6 connected in parallel, two switching elements 1 and 2 connected in series, a series circuits of two capacitors 8 and 9 connected in parallel with the series circuit of the switching elements, and a transformer 3 equipped with a secondary winding 19 for supplying high-frequency power to the load 10 constituting the charger through the primary winding 19 interposed between the junction between the fellow switching elements and the junction between the fellow capacitors. This control circuit has two switching elements 21 and 22 turned on or turned off by two saturation magnetic cores 23 and 24, and a variable frequency magnetic oscillating circuit constituted of parallel capacitors 27 and 28, etc., and the two switching elements 1 and 2 are alternately on/off controlled by the high-frequency signal from the secondary winding of the transformer 25.</p> |
