Solid-state exciter circuit with two drive pulses having indende

Details Solid-state exciter circuit with two drive pulses having indende Solid-state exciter circuit with two drive pulses having indende

1995-10-27

1997-08-05

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Igniting systems

For electric spark ignition

361257, 315209CD, 123640, 123641, F23Q 300, F23Q 500

Patent

active

056548680

ABSTRACT:
A solid-state exciter circuit for establishing arc discharges in igniter devices. The exciter circuit includes first and second transformers, first and second main discharge capacitors, and first and second exciter sub-circuits for controlling the charging and discharging of the latter capacitors. The exciter sub-circuits independently generate component ignition or drive pulses each of which has a magnitude and duration that is optimized for a respective part of an ignition event. The exciter circuit then combines these pulses to produce a composite ignition pulse having voltage and current waveforms that so match the discharge characteristics of an igniter that the latter generates an arc of the desired magnitude and duration substantially without being overexcited or underexcited.

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