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. 05, 2015
Filed:
Jan. 04, 2013
SK Innovation Co., Ltd., Seoul, KR;
Geun Hoe Huh, Daejeon, KR;
SK Innovation Co., Ltd., , KR;
Abstract
Provided is a circuit for measuring insulation resistance, including: a first operational amplifier that is connected with a positive terminal of a battery and a second operational amplifier; a second operational amplifier that is connected with a negative terminal of the battery and the first operational amplifier; a first switch that is connected between the positive terminal and a non-inverting terminal of the first operational amplifier; and a second switch that is connected between the negative terminal and an inverting terminal of the second operational amplifier, wherein the first operational amplifier and the second operational amplifier are connected with each other through a ground.