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:
Oct. 26, 2021
Filed:
Jul. 27, 2017
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-ku, JP;
Hiroki Shigeta, Chuo-ku, JP;
Toshihide Nakano, Chuo-ku, JP;
Abstract
An AC switch () includes a first thyristor (T), a second thyristor (T), a third thyristor (T), and a fourth thyristor (T). The first thyristor (T) has an anode connected to an AC power source (), and a cathode connected to a load (). The second thyristor (T) is connected in antiparallel to the first thyristor (T). The third thyristor (T) has an anode connected to the AC power source (), and a cathode connected to the load (). The fourth thyristor (T) is connected in antiparallel to the third thyristor (T). A current detector () detects the AC current supplied from the AC power source () to the load (). A controller () causes the first thyristor (T) and the third thyristor (T) to conduct alternately and causes the second thyristor (T) and the fourth thyristor (T) to conduct alternately, for each one-cycle period of the AC current, in accordance with the detection value from the current detector ().