Method and device in power transistor

Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor

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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

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