Clamping circuit for IGBT in spark plug ignition system

Details Clamping circuit for IGBT in spark plug ignition system Clamping circuit for IGBT in spark plug ignition system

1995-05-17

1996-10-29

Pascal, Robert

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

123645, F02P 302

Patent

active

055699820

ABSTRACT:
An ignition circuit for a spark plug includes an IGBT switch with a foldback clamp circuit. The foldback clamp has a first high clamp voltage for a first short interval to fire the spark plug, followed by a lower clamp voltage. The power dissipation of the IGBT switch is therefore substantially reduced.

REFERENCES:
patent: 3949722 (1976-04-01), Linstedt et al.
patent: 4077379 (1978-03-01), Jundt et al.
patent: 4217874 (1980-08-01), Sohner et al.

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