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:
Apr. 14, 1981
Filed:
Jul. 02, 1979
Applicant:
Inventor:
John J Price, Jr, Mesa, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323316 ;
Abstract
A current drive source circuit for providing current drive to a plurality of loads coupled thereto for reducing effects of power supply variations on the loads. The current drive source includes a reference circuit for producing a reference bias potential for biasing a load transistor. An internal current source comprising a split dual-collector PNP transistor provides collector current to the load transistor and also a feedback signal path to the emitter of the load transistor, which emitter electrode is coupled via a resistor to a ground terminal. The output of the current drive source is provided at the base electrode of the split dual-collector transistor.