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:
May. 29, 2018
Filed:
Aug. 01, 2017
Fuji Electric Co., Ltd., Kawasaki-shi, Kanagawa, JP;
Tetsuya Kawashima, Matsumoto, JP;
FUJI ELECTRIC CO., LTD., Kawasaki-Shi, Kanagawa, JP;
Abstract
A negative power supply generates a voltage Vm that is negative when a source voltage Vh' of an activation element is used as a reference. A differential voltage between the above-described voltage Vh′ and the voltage Vm is applied to an activation circuit arranged between the activation element and a control power supply voltage Vcc. The activation circuit is configured to include a current detection resistor, a voltage conversion resister, a current source, a first PMOS switch, a second PMOS switch, and a control amplifier. The control amplifier operates in a voltage range between Vh′ and Vm, and an output of the control amplifier is connected to a gate of the first PMOS switch.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile