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:
Jun. 02, 2009
Filed:
Jul. 25, 2005
Applicants:
Seigou Yukutake, Hitachinaka, JP;
Mutsuhiro Mori, Mito, JP;
Yasuhiko Kohno, Naka, JP;
Inventors:
Assignee:
Renesas Technology Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G 7/18 (2006.01); G06F 7/64 (2006.01);
U.S. Cl.
CPC ...
Abstract
An ignitor comprising a circuit with a millisecond order time constant and with a minimum circuit size and area, which is capable of self-shutdown without leading to erroneous ignition upon detection of an abnormality. An ignitorcapable of self-shutdown upon detection of an abnormality comprises an abnormality detection circuitwhose rise output is applied to the gate of a self-shutdown MOSFETvia an integration circuitcomprised of a diodeand a capacitor. The gate voltage of IGBT, which is a main-current switching device, can be decremented.