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. 27, 1978
Filed:
Feb. 14, 1977
Applicant:
Inventor:
Leonard D Cohen, Brooklyn, NY (US);
Assignee:
Cutler-Hammer, Inc., Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03J / ;
U.S. Cl.
CPC ...
334 15 ; 3311 / ; 331176 ; 3311 / ; 357 14 ; 357 15 ; 357 28 ;
Abstract
A tuning compensation device to reduce post-tuning frequency drift in voltage controlled oscillators, comprising a thermoelectric element, such as a wafer of doped semiconductor material, in contact with the junction of a tuning element, such as a varactor diode, to produce a correction to the control voltage and thereby compensate for thermally induced frequency drift.