Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1976-06-21
1978-08-15
Zazworsky, John
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307252M, 307305, H03K 1772
Patent
active
041075510
ABSTRACT:
A thyristor turn-off system comprising: a thyristor having at least an anode, a cathode and a gate; a first reverse-bias means for applying reverse-bias between said anode and said cathode of the thyristor; a second reverse-bias means for applying reverse-bias to said gate of the thryistor; means for applying reverse-bias to said gate of the thyristor by said second reverse-bias means during the time of or before or after the forward bias initiation time for shifting between said anode and said cathode of the thyristor from reverse-bias to forward bias; whereby a failure of turn-off of the thyristor is prevented by said gate reverse-bias at least after said forward bias initiation time.
REFERENCES:
patent: 3404293 (1968-10-01), Harris et al.
patent: 3488522 (1970-01-01), Cameron et al.
patent: 3622806 (1971-11-01), Williams
patent: 3714467 (1973-01-01), Kariya et al.
Mitsubishi Denki & Kabushiki Kaisha
Zazworsky John
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