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:
Aug. 22, 2017
Filed:
Dec. 10, 2014
Applicant:
Keithley Instruments, Llc, Solon, OH (US);
Inventor:
Wayne C. Goeke, Hudson, OH (US);
Assignee:
Keithley Instruments, LLC, Solon, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/08 (2006.01); H03K 3/01 (2006.01); G01R 1/36 (2006.01); H02H 9/04 (2006.01);
U.S. Cl.
CPC ...
H03K 3/01 (2013.01); G01R 1/36 (2013.01); H02H 9/04 (2013.01);
Abstract
A voltage clamp circuit which operates using a voltage controlled current source where the change of the polarity of the voltage controlled current source controls whether it is clamping or not. While clamping, the stability of the control loop uses the capacitance of the output to create and single pole roll-off of the loop gain and while not clamping, uses the capacitance of the circuit which sets the clamping voltage to produce the roll-off. The circuit operates in a linear fashion both while clamping and not clamping, which allows for a faster response when clamping is needed.