The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 1985
Filed:
Sep. 16, 1982
Frederick W MacDougall, Marion, MA (US);
Aerovox Incorporated, New Bedford, MA (US);
Abstract
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 in series with the device, at least one additional capacitance element, switching means for selectably connecting the additional capacitance element in parallel with the first capacitance element for providing different levels of current to the device, and a resistance element 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; and the internal charging resistor and two capacitance elements form an integral wound capacitor.