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.

Date of Patent:
Feb. 28, 2012

Filed:

Jun. 21, 2007
Applicant:

Roger J. Kalina, San Diego, CA (US);

Inventor:

Roger J. Kalina, San Diego, CA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01K 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

Systems and methods relating to programmable circuits are described. Several embodiments relate to systems and methods for controlling the long-term stability and accuracy of circuits that produce waveforms varying in frequency and amplitude. Such embodiments may include a circuit comprising a common vacuum environment that houses a pair of heater-thermocouples. The circuit may compare signals outputted by each heater-thermocouple and then may produce a resultant value based on the comparison. The resultant value may be used by the circuit to control the long-term stability and accuracy of the circuit. Such control of the long-term stability and accuracy of the circuit may include drift compensation associated with certain components of the circuit.


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