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:
Dec. 29, 2015
Filed:
Aug. 08, 2012
Leonid A. Neyman, Sunnyvale, CA (US);
Leonid A. Neyman, Sunnyvale, CA (US);
IXYS Corporation, Milpitas, CA (US);
Abstract
A power supply circuit includes a rectifier, a charging circuit, and a storage capacitor. An AC signal is rectified by the rectifier thereby generating a rectified signal Vbetween a Vnode and a GND node. The capacitor is coupled between an output voltage Vnode and the GND node. If Vis greater than a first predetermined voltage Vthen the Vnode is decoupled from the Vnode. If Vis below Vthen the charging circuit supplies a substantially constant charging current from the Vnode, through the charging circuit, to the Vnode, and to the capacitor, provided that Von the capacitor is below a second predetermined voltage Vand provided that Vis adequately high with respect to V. Due to the charging current, the voltage Von the storage capacitor is restored to the desired second predetermined voltage.