Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific quantity comparison means
Reexamination Certificate
2005-05-13
2009-06-16
Jackson, Stephen W (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific quantity comparison means
Reexamination Certificate
active
07548402
ABSTRACT:
In a high voltage pulse generating circuit, inductive energy is accumulated in an inductor due to electrical continuity of a first semiconductor switch by turning on a second semiconductor switch, and a high voltage pulse is generated by the inductor due to turning off of the first semiconductor switch by turning off the second semiconductor switch. In the case where both edge voltages of the first semiconductor switch and the second semiconductor switch are off the normal range, a failure diagnosis circuit is provided for stopping drive of the second semiconductor switch.
REFERENCES:
patent: 6008564 (1999-12-01), Takayoshi et al.
patent: 6841124 (2005-01-01), Chien et al.
patent: 7084528 (2006-08-01), Hatano et al.
patent: 2003/0230938 (2003-12-01), Hatano et al.
patent: A 5-276739 (1993-10-01), None
patent: A 10-215587 (1998-08-01), None
patent: A 10-295078 (1998-11-01), None
patent: A 2002-112452 (2002-04-01), None
patent: A 2004-72994 (2004-03-01), None
Hatano Tatsuhiko
Sakuma Takeshi
Hoang Ann T
Jackson Stephen W
NGK Insulators Ltd.
Oliff & Berridg,e PLC
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