Ignition control integrated circuit having substrate injection p

Details Ignition control integrated circuit having substrate injection p Ignition control integrated circuit having substrate injection p

1984-01-04

1986-03-04

Dixon, Harold

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

307200A, 307300, 307443, 315200R, 315209R, H05B 3700

Patent

active

045742219

ABSTRACT:
There is disclosed an ignition control circuit of the type which facilitates the storage of energy in an external inductive load during a dwell period and the release of the stored energy from the inductive load through a spark gap at the end of the dwell period. The circuit includes switch means for conducting current through the inductive load during the dwell period, and an integrated circuit for turning the switch means on during the dwell period and off at the end of the dwell period. The integrated circuit includes an output transistor for controlling the switch means, a current source for driving the output transistor, and control means for enabling the current source during the dwell period and disabling the current source at the end of the dwell period.

REFERENCES:
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patent: 3469173 (1969-09-01), Ohashi et al.
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patent: 3882840 (1975-05-01), Adamian
patent: 4236088 (1980-11-01), Horiuchi et al.
patent: 4291319 (1981-09-01), Carinalli
patent: 4347827 (1982-09-01), LoCascio
patent: 4359038 (1982-11-01), Xiberas
patent: 4461979 (1984-07-01), Jeenicke et al.
patent: 4471237 (1984-09-01), Kaplan

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