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:
Dec. 14, 2010
Filed:
Dec. 23, 2008
Applicants:
Osamu Machida, Saitama, JP;
Akio Iwabuchi, Saitama, JP;
Inventors:
Osamu Machida, Saitama, JP;
Akio Iwabuchi, Saitama, JP;
Assignee:
Sanken Electric Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/687 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device capable of bidirectional on-off switching control of an electric circuit. Included is a normally-on HEMT connected between a pair of terminals of the device. A normally-off MOSFET of relatively low antivoltage strength is connected between the HEMT and one of the pair of terminals, and another similar MOSFET between the HEMT and the other of the terminal pair. A diode is connected in inverse parallel with each MOSFET, and two other diodes are connected between the gate of the HEMT and the pair of terminals respectively. The switching device as a whole is normally off.