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. 01, 1989
Filed:
Jul. 06, 1988
Applicant:
Inventor:
Kazuo Imanishi, Kanagawa, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03F / ; H03F / ;
U.S. Cl.
CPC ...
330273 ; 330 51 ;
Abstract
A power amplifier circuit comprises amplifier means, and mode switching means for selectively changing the amplifier means between an operational state wherein the input signal is amplified, and a stand-by state wherein the input signal is not amplified. The mode switching means includes timing means for delaying the change of the amplifier means to the stand-by state for a predetermined time after the stand-by state is selected, and means for supplying a predetermined potential to the amplifier means when the stand-by state is selected.