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:
Jun. 16, 1981
Filed:
Jan. 02, 1979
Applicant:
Inventors:
David L Cave, Tempe, AZ (US);
Robert B Davies, Tempe, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307300 ; 3072 / ; 307313 ; 330267 ; 307456 ; 307549 ;
Abstract
A clamp circuit is disclosed which includes a transistor connected between the multiple collectors of a bias current device for complementary output transistors and the output terminal of a driver circuit. The clamp transistor is rendered conductive by signals at the output terminal of the driver circuit which would otherwise heavily saturate the bias current device. The clamp transistor conducts current to provide additional needed bias to the complementary output device and to keep such current from disturbing the magnitudes of currents provided by a current generator circuit which is also connected to the bias current device.