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:
Jun. 27, 1995
Filed:
Jul. 09, 1992
William Peil, N. Syracuse, NY (US);
Premier Power Systems, Inc., N. Syracuse, NY (US);
Abstract
The invention relates to a DC power supply utilizing DC to AC to DC conversion with pulse to pulse current mode IC controlled PWM modulation at an above-sonic repetition rate (e.g., 30 Khz) in a degenerative feedback loop to achieve output regulation. The powder supply, which includes a step-down transformer and a choke input LC filter, is designed for energizing a short-arc, lamp and provides glow to arc transition energization, regulated run energization, and igniter controls. Output regulation may be either of current or power and is based on using a current emulating the current flowing into the filter choke or using both the emulating current and a voltage sensed in a separate secondary winding of the transformer. A novel ramp generating circuit which preserves loop sensitivity at high power loads and a novel method of powering the controlling IC are also disclosed.