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. 10, 2019
Filed:
Jan. 20, 2015
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 3/011 (2006.01); G01K 3/10 (2006.01); G01K 7/00 (2006.01); H01L 31/12 (2006.01); H03K 3/017 (2006.01); G01K 7/01 (2006.01); H01G 9/00 (2006.01); H01G 9/28 (2006.01); H01L 25/16 (2006.01); H01L 31/167 (2006.01);
U.S. Cl.
CPC ...
H03K 3/011 (2013.01); G01K 3/10 (2013.01); G01K 7/00 (2013.01); G01K 7/01 (2013.01); H01G 9/0003 (2013.01); H01G 9/28 (2013.01); H01L 25/167 (2013.01); H01L 31/12 (2013.01); H01L 31/167 (2013.01); H03K 3/017 (2013.01);
Abstract
First and second circuits, a photocoupler and a substrate temperature monitor circuit are formed on a substrate. A photocoupler includes a primary-side light emitting diode that converts an electric signal received from the first circuit into an optical signal, and a light receiving device that converts the optical signal into an electric signal and outputs the electric signal to the second circuit. The substrate temperature monitor circuit reads a Vf voltage value of the primary-side light emitting diode of the photocoupler to monitor temperature of the substrate.