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:
Jan. 13, 1981
Filed:
Dec. 11, 1978
Applicant:
Inventors:
Rangaswamy Arumugham, Acton, MA (US);
George H Kam, Tonawanda, NY (US);
Assignee:
GTE Products Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323225 ; 307D / ; 354 15 ;
Abstract
A high input impedance, low output impedance, temperature-stable tuning voltage interface circuit with substantial ripple rejection and negligible DC offset. The circuit comprises two transistors of opposite conductivity types, the first being coupled through a resistor to a supply voltage and through a temperature-stabilizing, DC-offsetting diode to the output of the second transistor. The rejection of the ripple voltage superimposed on the supply voltage is determined by the ratio of the value of the resistor to the effective resistance of the diode.