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    • 5. 发明授权
    • Direct voltage transformer
    • 直接电压变压器
    • US3621361A
    • 1971-11-16
    • US3621361D
    • 1970-10-19
    • BARTH ALFRED
    • BARTH ALFRED
    • H02M3/28H02M3/22
    • H02M3/28Y10T307/297
    • A direct voltage transformer device embodying a DC-AC inverter means at the input side thereof for delivering a square wave voltage output, said inverter means including a regulating circuit means incorporating an adjustment element for changing the pulse width of said square wave voltage output for maintaining constant the secondary direct voltage. A half-wave rectifier circuit arrangement receives the square wave voltage output of the inverter means. This half-wave rectifier circuit arrangement comprises an input transformer means constituted by a primary winding and a secondary winding, a first rectifier element electrically coupled to one terminal of said secondary winding, a subsequently coupled filter coil and capacitor filter. There is also provided a further transformer means having primary winding means and secondary winding means, wherein said primary winding means constitutes said filter coil. Additional rectifier circuit means are electrically coupled with said secondary winding means of said further transformer means, said additional rectifier circuit means conducting during the blocking periods of said first rectifier element coupled with said one terminal of said secondary winding of said input transformer. A second rectifier element is coupled between the junction point of said first rectifier element and said filter coil and the other terminal of said secondary winding of said input transformer means, this second rectifier element blocking during the conductive periods of said first rectifier element.