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:
Mar. 22, 1983
Filed:
Jan. 09, 1981
John J Toney, Scottsdale, AZ (US);
Leland T Brown, Phoenix, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A circuit for use with telephony systems or the like for protecting these systems, which may be comprised of integrated circuits, from high transient voltages. The circuit includes a silicon controller rectifier (SCR) having the cathode and anode coupled between an input of the telephony system and earth potential. The gate of the SCR is coupled via a resistor to the cathode thereof and is also returned through a reversed-biased diode to a source of bias potential whereby negative voltage transients are shorted to earth potential such that the integrated circuits as well as the bias potential source are not damaged.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile