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. 15, 1981
Filed:
Jul. 25, 1979
Masashi Shoji, Tokyo, JP;
Nippon Electric Co., Ltd., Tokyo, JP;
Abstract
A power amplifier whose bias voltage changes depending on the power supply voltage comprises a first amplifier with an input terminal and a feedback terminal. A second amplifier amplifies the output of the first amplifier, and the output of the second amplifier is fed back to the feedback terminal of the first amplifier. A bias circuit is connected between the power supply terminals and provides a bias to the input terminal of the first amplifier. The bias circuit includes a series connection of a first constant voltage generating device, a first resistor, a second resistor, and a parallel connection of a second constant voltage generating device and a third resistor. The input terminal of the first amplifier is biased by a voltage depending on the voltage at a connection point between the first and second resistors.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile