GTO turn-off circuit providing turn-off gate current pulse propo

Details GTO turn-off circuit providing turn-off gate current pulse propo GTO turn-off circuit providing turn-off gate current pulse propo

1974-07-01

1976-02-24

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307240, 307252J, 307305, H03K 1772

Patent

active

039406334

ABSTRACT:
A turn-off circuit for a gate turn-off thyristor (GTO) generates a ramped turn-off gate current pulse which, because of the increase in device storage time with anode current, has a peak magnitude approximately proportional to the anode current. The direct-coupled or transformer-coupled turn-off circuit employs a transformer controlled by a solid state switch with the secondary winding connected to return excess energy to a supply.

REFERENCES:
patent: 3308800 (1967-03-01), Motto, Jr. et al.
patent: 3353032 (1967-11-01), Morgan et al.
patent: 3609476 (1971-09-01), Storm
patent: 3622806 (1971-11-01), Williams
patent: 3840275 (1974-10-01), Takahashi
patent: 3855518 (1974-12-01), Genuit

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