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:
Aug. 04, 1981
Filed:
Jun. 28, 1976
William C Voigt, Houston, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
The ferromagnetic core of a transformer in a switching regulator power supply is configured to improve the efficiency of the supply. Since the switching times and their resultant losses occupy a greater percentage of the energy-storage energy-transfer cycle as the operating frequency increases, efficiency is increased by narrowing the operating frequency range. There is provided a transformer core which allows the inductances in the transformer windings to vary during each energy-storage and energy-transfer half cycle. The initial inductance can be chosen such that a predetermined time interval is added to each half cycle regardless of output load to thereby decrease the operating frequency range.