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:
Jan. 05, 1999
Filed:
Apr. 22, 1997
Yasunobu Suzuki, Koganei, JP;
Isao Sugawara, Warabi, JP;
I-Hits Laboratory, Kanagawa, JP;
Chiyoda Corporation, Saitama, JP;
Abstract
A method for providing an uninterruptible power supply to a load both at ordinary times and in an emergency. At ordinary times, commercial AC input power is modulated into high-frequency AC power, which is then applied to a primary winding of a high-frequency transformer having the primary winding, a secondary winding and a tertiary winding. High-frequency AC power induced in the secondary winding from the primary winding is demodulated into AC output power, which is then supplied to the load. High-frequency AC power induced in the tertiary winding from the primary winding is rectified into DC power, with which a storage battery is charged. In an emergency, DC power from the storage battery is converted into high-frequency AC power, which is then applied to the tertiary winding. High-frequency AC power induced in the secondary winding from the tertiary winding is averaged, thereby producing AC output power, then the AC output power is supplied to the load.