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. 13, 1985
Filed:
Apr. 26, 1983
Applicant:
Inventor:
Daniel L Reneau, Elmhurst, IL (US);
Assignee:
Zenith Electronics Corporation, Glenview, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
307264 ; 307494 ; 307496 ; 330255 ;
Abstract
A PNP turnaround circuit includes a common base lateral PNP transistor connected to the output of a high gain amplifier having a resistor coupled thereacross. The input is supplied from a differential pair of NPN transistors havng their emitters connected to a current source. One transistor of the differential pair has its collector connected to the collector of the PNP for supplying a push/pull output. In another embodiment the collector of the PNP is returned to ground through a load resistor and a DC level shifted output signal is developed.