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:
Feb. 10, 2009
Filed:
Apr. 02, 2007
Applicant:
Steven L. Hauptman, Camarillo, CA (US);
Inventor:
Steven L. Hauptman, Camarillo, CA (US);
Assignee:
Teradyne, Inc., North Reading, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus includes a circuit element that requires calibration, a calibration circuit for use in calibrating the circuit element, and a damping diode electrically connectable in a first path that includes the calibration circuit and electrically connectable in a second path that excludes the calibration circuit. The first path is for electrically connecting the calibration circuit and the circuit element, and the second path is for use in protecting the apparatus from electrostatic discharge. A switching circuit is used to switch the clamping diode between the first path and the second path.