GATE CONTROLLING CIRCUIT FOR GATE TURN-OFF THYRISTOR

Title:

GATE CONTROLLING CIRCUIT FOR GATE TURN-OFF THYRISTOR

Document Type and Number:

Japanese Patent JPS57126270

Kind Code:

A

Abstract:

PURPOSE:To turn ON or OFF a GTO thyristor by utilizing DC voltage from two rectifying circuits connected to the output coils of a transformer connected to a single power source. CONSTITUTION:Signals (a), (b) are applied to transistor S11, S12 during the ON period of a GTO thyristor, rectangular AC output generated at the secondary coil W2 of a transformer GT1 is rectified by diodes D1, D2, and the rectified current is supplied as an ON gate current ION to the gate of the thyristor. On the other hand, a rectangular AC output generated at the tertiary coil W3 is charged to a capacitor C through a diode D3, and a signal (c) is applied to a transistor S2 in case that the thyristor is turned OFF, an OFF current IOFF is supplied to the gate of the thyristor through a transformer GT2 and diodes D4, D5.

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JPS5932012	[Title of the Invention] A gate driving device of a gate turnoff thyristor
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Inventors:

MORIYA FUMIYASU

Application Number:

JP1210681A

Publication Date:

August 05, 1982

Filing Date:

January 29, 1981

Export Citation:

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Assignee:

TOKYO SHIBAURA ELECTRIC CO

International Classes:

H02M1/06; H03K17/732; (IPC1-7): H02M1/08

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