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:
Apr. 13, 1982
Filed:
Oct. 09, 1980
Applicant:
Inventors:
James E Morehouse, New Tripoli, PA (US);
Richard A Pedersen, New Tripoli, PA (US);
Assignee:
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
361 93 ; 3072 / ; 340653 ;
Abstract
A detector circuit (102) is connected to the gate of a thyristor (103) for generating an output signal indicating the presence of current flowing out of the cathode of the thyristor. A switch circuit (101), which is responsive to a control signal, selectively applies the control signal in a first state to the gate and, when the control signal is in a second state, connects the detector circuit to the gate to detect current flowing out of the gate of the thyristor.