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:
May. 31, 1977
Filed:
Jun. 30, 1975
Applicant:
Inventor:
Whitney Robertson Campbell, Elk Grove Village, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330 13 ; 330 15 ; 330 26 ; 330195 ;
Abstract
A pair of complementary output transistors having common connected emitters and a primary winding of a transformer in each of the collector circuits, said transistors being biased in class AB operation with a drive transistor connected to the base thereof and a feedback circuit, including both AC and DC, connected from the common emitters to the input of the drive transistor so that the quiescent current of the amplifier is very low and the output impedance is high.
Quick Actions:
Campbell, Whitney. (1977). Audio line driver amplifier (U.S. Patent No. 4027269). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4027269
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile