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:
Sep. 11, 2001
Filed:
Apr. 27, 2000
Robert K. White, Los Osos, CA (US);
Rantec Power Systems Inc., Los Osos, CA (US);
Abstract
A power supply for achieving high output power levels at a high efficiency from a compact profile. The power supply includes a current regulator which receives a source voltage and outputs a signal having a constant current. The signal output from the regulator is provided to a center tap of a primary winding of a transformer. The ends of the primary winding of the transformer are connected to switches which are controlled by a switch driver. The transformer, switches and switch driver form a resonant oscillator. The switch driver is connected to a zero voltage level detector which detects when the voltage of the signal output from the current regulator reaches a zero level. When such a detection is made, the zero voltage level detector provides an enable signal to the switch driver to operate the switches in a push-pull mode. By operating the switches in a push-pull mode, the energy balance and resonance of the transformer can be maintained. This energy balance allows additional transformers to be connected directly in parallel to increase the output power capability.