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:
May. 05, 1981
Filed:
Apr. 23, 1979
Nikola Tkacenko, Sunnyvale, CA (US);
Other;
Abstract
A switching power supply including a rectifier for rectifying input AC line power to provide a source of DC voltage, an output transformer having a primary winding for receiving power from the DC source and a plurality of secondary output windings for providing a plurality of regulated output voltages, an inductor coupled to the primary winding of the output transformer for returning stored energy to the source during switching dead times, a control circuit for monitoring the magnitude of the source voltage and for generating first and second switching control signals, the duty cycle of which is directly related to the magnitude of the source voltage, switching transistors for alternately completing oppositely directed current paths from the source through the transformer primary and inductor to ground, and diodes for creating a uni-directional current path to the source for energy stored in the inductor.