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. 04, 1981
Filed:
Aug. 13, 1979
Per Svedberg, Vallingby, SE;
ASEA Aktiebolag, Vasteras, SE;
Abstract
An overvoltage protection device is employed to protect the low power semiconductor components of a circuit against overvoltages applied at the connection leads of the circuit. The device has at least two branches that are each connected between a common point and one of the connection leads of the circuit. Each branch includes a diode thyristor that is self-igniting in response to a particular overvoltage and an associated diode that is connected in opposed relation to the diode thyristor. The diode thyristors are aligned to conduct in the same direction with respect to the common point of connection. An additional branch may be connected between the common point and ground.