Photoelectric isolation circuit for an internal combustion engin

Details Photoelectric isolation circuit for an internal combustion engin Photoelectric isolation circuit for an internal combustion engin

1982-01-20

1984-05-08

Lall, Parshotam S.

Internal-combustion engines

High tension ignition system

Using capacitive storage and discharge for spark energy

123618, 307311, 250211J, F02P 504

Patent

active

044468415

ABSTRACT:
The invention provides a circuit (100) that isolates the electrical signals or noise in an ignition system from a computer (60) which controls the timing of the ignition system. The circuit is characterized by an electro-optical coupling device (130) such as a photosensitive transistor (125) controlled by a light emitting diode (120) to provide a variable light output in response to a variable output signal from the computer analyzing the operation of the engine.

REFERENCES:
patent: 3472216 (1969-10-01), Clyborne
patent: 3952715 (1976-04-01), Van Siclen, Jr.
patent: 4087706 (1978-05-01), Koester, Jr.
patent: 4194481 (1980-03-01), Leblanc et al.
patent: 4197471 (1980-04-01), Lackey et al.
patent: 4380224 (1983-04-01), Van Siclen, Jr.

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