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:
Dec. 03, 2019
Filed:
Feb. 06, 2019
Stanley Electric Co., Ltd., Meguro-ku, Tokyo, JP;
Keizo Sekido, Tokyo-to, JP;
STANLEY ELECTRIC CO., LTD., Tokyo, JP;
Abstract
A strobe apparatus includes: a light-emitting semiconductor module; a current sense resistor connected in series to the light-emitting semiconductor module and adapted to sense a drive current flowing through the light-emitting semiconductor module to generate a sense voltage; a step-up voltage converter connected to the light-emitting semiconductor module and the current resistor and adapted to supply the drive current to the light-emitting semiconductor module and the current resistor; and a voltage converter controlling unit connected to the step-up voltage converter and the current sense resistor, and adapted to control the step-up voltage converter in accordance with a difference between the sense voltage and an input voltage, so that the drive current has a first level current followed by a second level current larger than the first level current.