Voltage doubler circuit

Details Voltage doubler circuit Voltage doubler circuit

H - Electricity

02

M

321/13, 334/5

H02M 9/06 (2006.01) H01G 4/38 (2006.01) H01G 4/40 (2006.01) H02M 3/28 (2006.01) H02M 7/10 (2006.01)

Patent

CA 1202365

ABSTRACT OF THE DISCLOSURE A voltage doubler circuit for providing half-wave direct current at a predetermined peak voltage level to a device, has a source of alternating current having a peak voltage lower than the predetermined peak. A first capacitance element is connected in series with the device and there is at least one additional capacitance element and a switch for selectably connecting the additional capacitance element in parallel with the first capacitance element for providing different levels of current to the device. A resistance element is connected between the capacitance elements for causing a voltage buildup on the additional capacitance element when the additional capacitance element is not connected by the switching means, whereby the peak voltage across the switch is smaller than the predetermined peak voltage level. The internal charging resistor and two capacitance elements form an integral wound capacitor.

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