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:
Sep. 24, 1996
Filed:
Jul. 25, 1994
Hisaya Okumura, Kawasaki, JP;
Yoshiaki Aizawa, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kanagawa-ken, JP;
Abstract
A semiconductor relay has two output MOSFET pairs, each of which is series-connected with the other. Each MOSFET pair is comprised of two MOSFETs series-connected oppositely to each other, and these MOSFETs are controlled to turn on or off simultaneously. The semiconductor relay further includes a switch, which is inserted between the ground and the junction of the two MOSFET pairs. When these MOSFETs are in an off condition, said switch is closed in order to release electric charges accumulated on said MOSFETs and to increase the off-resistance of this semiconductor relay. On the other hand, when the MOSFETs are in an on condition, said switch is opened so as to connect both MOSFET pairs in series. As a result, a semiconductor relay having a high off-resistance can be obtained without increasing the on-resistance.