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. 10, 1996
Filed:
Feb. 08, 1995
Toshio Oku, Tokyo, JP;
Machida Endoscope Co., Ltd., Tokyo, JP;
Abstract
A device that provides a control system which is capable of positively preventing a semiconductor from suffering from latch up. In order to prevent this latch up, a control circuit controls the semiconductor through a power source switch. The control circuit is capable of supplying a constant voltage to a power source terminal of the semiconductor when it is electrically connected to the power source circuit by turning on the power source switch, and thereafter supplying a control signal to a control terminal of the semiconductor. The control circuit is capable of stopping the output of the control signal to the control terminal and then stopping the supply of voltage to the power source terminal when disconnected from the power source circuit by turning off the power source.