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:
Aug. 17, 2010
Filed:
Feb. 15, 2008
Osamu Uehara, Chiba, JP;
Osamu Uehara, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A current detector circuit detects a current supplied to a load and generates as a detection result a voltage corresponding to the detected current. A first p-channel transistor has a source connected to a power supply and a gate connected to a ground, and is configured to allow the passage therethrough of a current that is 1/N of a current flowing through a transistor which drives the load. A second p-channel transistor has a source connected to a drain of the first p-channel transistor, and a third p-channel transistor is connected to the load. A voltage mirror circuit has first and second terminals connected to respective drains of the second and third p-channel transistors. A n-channel transistor has a drain connected to the drain of the first p-channel transistor and outputs a source voltage as the detection result of the current detector circuit.