Title:
CONTROL CIRCUIT FOR POWER SWITCHING ELEMENT
Document Type and Number:
Japanese Patent JPH08308213
Kind Code:
A
Abstract:
PURPOSE: To increase the breaking current by temporarily increasing the OFF gate current of a GTO.
CONSTITUTION: A normal OFF gate current turns ON a switching element 6 to be supplied in the circuit of a power source 7, the cathode of a GTO 1, the gate of the GTO 1, the element 6 and the power source 7. At the time of breaking an over current, the OFF gate current larger than the normal OFF gate current is supplied in the circuit of the power source 7, the cathode of the GTO 1, the gate of the GTO 1, a switching element 8, a power source 9 and the power source 7.
Inventors:
TAI HIROMICHI
Application Number:
JP10284695A
Publication Date:
November 22, 1996
Filing Date:
April 27, 1995
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H02H3/08; H02M1/00; H02M1/06; (IPC1-7): H02M1/06; H02H3/08; H02M1/00
Attorney, Agent or Firm:
Noriyuki Noriyuki
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