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. 06, 1978
Filed:
Nov. 18, 1976
Karl-Diether Nutz, Heilbronn, DT;
Licentia Patent-Verwaltungs-G.m.b.H., Frankfurt am Main, DT;
Abstract
A reference source for producing a current independent of temperature comprises a constant current source which feeds two parallel connected current branches each including a Zener diode of a different Zener voltage, one or more diodes driven in the forward direction in the branches, a transistor forming part of a current mirror circuit and having an output voltage across its collector-emitter path substantially determined by the difference in the Zener voltages, and a transistor circuit to which the output voltage of the above transistor is fed. The transistors of the transistor circuit and the diodes are selected so as to render the output current of the reference source independent of temperature with the assistance of the current mirror circuit.