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. 19, 1987
Filed:
Oct. 30, 1985
Kenji Honjo, Hyogo, JP;
Tooru Nakamura, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An inverter control circuit for a power supply source comprising an inverter and a commercial power source (reserve power source) and adapted to connect the inverter normally to a load and to change the inverter with the commercial power source uninterruptedly by means of a thyristor switch to supply power uninterruptedly to the load in case the inverter malfunctions. The inverter control circuit comprises a digital PLL circuit for synchronism control, a bias signal, and a parallel connection of a synchronism control circuit and a synchronism detecting circuit, and is capable of uniterruptedly changing the inverter to the commercial power source by being switched to biasing signals by means of the switch at the timing of the synchronism detecting of the synchronism detecting circuit in case the synchronism control circuit malfunctions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile