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Title:
SNUBBER CIRCUIT
Document Type and Number:
Japanese Patent JPH08294265
Kind Code:
A
Abstract:

PURPOSE: To reduce effective inductance by arranging a pair of snubber circuits symmetrically about a switching element, and shortening the interval between current forward and backward paths, using a plate-shaped conductor and an insulating spacer.

CONSTITUTION: This snubber circuit is provided with a pair of plate-shaped conductors 8a in parallel with a heat sink 6a so as to connect the cathode side of a pair of snubber diodes 2 with the terminals on one side of a pair of capacitors 3, and is provided with a plate-shaped conductor 8c which is arranged in parallel with this plate-shaped conductor 8a, and whose one edge is connected to the anode of a GTO1, and in which pair of arms extend to the side of a pair of snubber diode 2, and which is in the shape of a recess and has a slit at the center. Furthermore, this is provided with a pair of plate- shaped conductors 8b whose edges on one side extend to the side of a pair of snubber diodes 2 and lie upon the arm of the plate-shaped conductor 8c and whose edges on the other side are connected to the other terminals of a pair of snubber capacitors 3. And, this is provided with a pair of insulating spacers 13 between the conductor consisting of the plate-shaped conductor 8c and the plate-shaped conductor 8b and a pair of plate-shaped conductors 8a.


Inventors:
MATSUMOTO HISAAKI
Application Number:
JP1995000096364
Publication Date:
November 05, 1996
Filing Date:
April 21, 1995
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
H02H7/12; H02M1/00; H02M1/06; H03K17/16; (IPC1-7): H02M1/00; H02H7/12; H02M1/06; H03K17/16
Attorney, Agent or Firm:
則近 憲佑