Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1996-10-30
1998-10-27
Gaffin, Jeffrey A.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
361100, 361115, H02H 300
Patent
active
058285393
ABSTRACT:
A method and a device for control of a switching operation consisting of a turn-on or turn-off operation in a voltage-controlled power transistor (T1), wherein at least one current source (S1, S2) is arranged at the control electrode (G) of the power transistor for controlling the recharging of at least one of the capacitances which occurs between the control electrode (G) of the power transistor and the main electrodes (C, E) of the power transistor and thus to determine the time rate of change of at least one of the quantities voltage and current.
REFERENCES:
patent: 4540893 (1985-09-01), Bloomer
patent: 4947063 (1990-08-01), O'Shaughnessy et al.
patent: 5077651 (1991-12-01), Kobayshi et al.
patent: 5204562 (1993-04-01), Pace
Bijlenga Bo
Lundberg Peter
Persson Anders
Zdansky Lennart
ABB Research Ltd.
Gaffin Jeffrey A.
Jackson Stephen
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