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:
Nov. 02, 1999
Filed:
May. 21, 1998
Gary Arthur Edwards, Carleton Place, CA;
Raymond Kenneth Orr, Kanata, CA;
Astec International Limited, Hong Kong, HK;
Abstract
A buck regulator provides two outputs via two transformer-coupled inductors each coupled to a respective output capacitor and to a respective diode or switch for allowing current to flow in the respective inductor for charging the respective output capacitor during intervals between pulses of a pulsed input supply. One of the inductors is directly coupled and the other of the inductors is coupled via a further capacitor to the pulsed input supply so that current for charging the respective output capacitors flows in both inductors during the pulses. Each inductor can be tapped, and/or the transformer turns of the inductors are equalized, so that no a.c. voltage appears across the further capacitor and the output voltages can be different. The output voltages can also be stacked or of opposite polarities.