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:
Feb. 12, 1991
Filed:
Dec. 14, 1989
Applicant:
Inventors:
Akio Tokumo, Saitama, JP;
Masayuki Kato, Saitama, JP;
Takeshi Sato, Saitama, JP;
Tatsuzo Hasegawa, Saitama, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330 10 ; 330251 ;
Abstract
A pulse-width modulating amplifier circuit includes two bootstrap circuits for increasing the power voltage to drive circuits to prevent a drive voltage shortage. One bootstrap circuit is connected from the output of the a power amplifier to a drive circuit. The other bootstrap circuit is connected from the output of a filter demodulator to a drive circuit.