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:
Apr. 03, 2007
Filed:
Dec. 17, 2003
Takahiro Ogawa, Osaka, JP;
Takahiro Ogawa, Osaka, JP;
Funai Electric Co., Ltd., Daito-shi, JP;
Abstract
An error detection circuit includes: a Zener diode having a cathode connected through a resistor to a second DC output with a higher voltage than that of a first DC output; a voltage divider circuit; and a PNP transistor having an emitter connected to the first DC output, and a base supplied with an output voltage of the voltage divider circuit. A Zener voltage of the Zener diode and a voltage dividing ratio of the voltage divider circuit are set so that the output voltage of the voltage divider circuit is equal to a value obtained by subtracting the base-emitter voltage of the PNP transistor Qfrom the voltage of the first DC output, and that temperature characteristic of the output voltage of the voltage divider circuit is set at a value canceling temperature characteristic of the PNP transistor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile