Control device of switching device and control device of...

Details Control device of switching device and control device of... Control device of switching device and control device of...

2007-04-17

2007-04-17

Deberadinis, Robert L. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

Reexamination Certificate

active

10834085

ABSTRACT:
A control device includes a capacitor disposed between P–N lines and constituting a snubber circuit, and a voltage detection resistor for detecting a voltage between the P–N lines by dividing resistances to detect surge voltages of transistors, in which gate control signals are provided from drivers to the transistors through gate resistance variable devices, respectively. The gate resistance variable devices include variable resistors, respectively, and the resistance values of the variable resistors are controlled based on variable resistor control signals provided from a detected voltage monitoring device, respectively.

REFERENCES:
patent: 6570780 (2003-05-01), Furukawa et al.
patent: 6720792 (2004-04-01), Raftari et al.
patent: 5-111143 (1993-04-01), None
patent: 6-291631 (1994-10-01), None
patent: 8-21861 (1996-01-01), None
patent: 11-18291 (1999-01-01), None
patent: 2000-83370 (2000-03-01), None
patent: 2001-217697 (2001-08-01), None

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