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:
Dec. 26, 1995
Filed:
Nov. 30, 1993
Applicant:
Inventor:
William C Voigt, San Francisco, CA (US);
Assignee:
Kaiser Aerospace and Electronics Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ; G05F / ; H03F / ;
U.S. Cl.
CPC ...
363131 ; 363 16 ; 363 97 ; 323235 ; 323282 ; 330 10 ;
Abstract
A high-efficiency analog power amplifier is disclosed. The amplifier utilizes pulse-width-modulation ('PWM') signals to operate electrical switching devices coupled in series across a d.c. power source. A resonant circuit coupled to the transistors periodically places zero and non-zero voltage levels across each transistor. The frequency and width of the PWM signals are relative to the components of the resonant circuit--enabling each transistor to switch off and on only when zero volts appears across the transistor.