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:
Nov. 13, 2012
Filed:
Sep. 25, 2008
Applicant:
Mikimoto Jin, Chino, JP;
Inventor:
Mikimoto Jin, Chino, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/42 (2006.01); H03K 3/64 (2006.01);
U.S. Cl.
CPC ...
Abstract
A power transmission control device used for a non-contact power transmission system includes a power-transmitting-side control circuit that controls power transmission to a power receiving device, and a harmonic detection circuit that detects a harmonic signal of a drive frequency of a primary coil. A resonant circuit (leakage inductance and resonant capacitor) that resonates with the harmonic of the drive frequency of the primary coil L1 is formed in the power receiving device so that harmonic resonance occurs. The harmonic detection circuit detects the harmonic resonance peak of the drive frequency of the primary coil.