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. 31, 2002
Filed:
Sep. 25, 2001
Yoshio Higuchi, Osaka, JP;
Funai Electric Co., Ltd., Daito, JP;
Abstract
In a structure including a voltage control circuit for changing a voltage control signal to control an oscillation amplitude of a transistor Q for oscillation, thereby stabilizing a voltage of a secondary output there are provided a load suppressing circuit for restricting a lower limit of a load impedance of a secondary coil L to prevent the oscillation of the transistor Q for oscillation from being stopped when the secondary output is short-circuited, and an intermittent control circuit for repeating an operation for reducing a voltage of the voltage control signal to stop the oscillation when detecting a short circuit of a load and for raising the voltage of the voltage control signal to restart the oscillation after stopping the oscillation.