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. 12, 1988
Filed:
Jun. 30, 1986
Junichi Nishizawa, Sendai, JP;
Takashige Tamamushi, Sendai, JP;
Kimio Miura, Izumi, JP;
Kiyoo Mitsui, Sendai, JP;
Koichi Mitamura, Sendai, JP;
Zaidan Hojin Handotai Kenkyu Sinkokai, Sendai, JP;
Tohoku Electric Power Company, Incorporated, Sendai, JP;
Abstract
The present invention provides an optically controlled power converting apparatus using light trigger/light quench electrostatic induction thyristors, as switching elements, which can execute the switching operations at a high speed being when they are supplied with light trigger pulses and light quench pulses. By supplying the light trigger pulses and light quench pulses at the timings corresponding to the pulse width modulation, the light trigger/light quench electrostatic induction thyristors can perform predetermined power converting operations.