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:
Oct. 29, 1991
Filed:
May. 14, 1990
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, JP;
Abstract
A transistor provided with a current detecting function does not need any external resistance to detect current but uses a part of the electrode wiring through which main current flows as a resistance to prevent power loss. It detects the magnitude of main current on the basis of voltage drop caused by the resistance. Further, a stable sense voltage can be obtained without being affected by temperature change and sense voltages caused at the both ends of a sense resistance can be maintained constant with temperature change. Sense voltages can accurately correspond to the magnitude of main current flowing through a main transistor to enable excess current to be detected accurately.