Electronic ignition with advance

Internal-combustion engines – High tension ignition system – Using capacitive storage and discharge for spark energy

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Details

123418, 123602, F02P 306, F02P

Patent

active

044136080

ABSTRACT:
A trigger circuit comprises first, second and third triggerable switches each being rendered conductive when a signal at its control terminal reaches the threshold level. The first switch is connected to accept a timing pulse signal. The first and second switches are connected in series with each other and a control terminal of the third switch to activate the third switch when both the first and second switches have become conductive.
A delay circuit is in series with the first switch and in parallel with the gate and one other terminal of the second switch. A time delay is introduced after the first switch is activated by the timing pulse signal and before the second switch is activated to thus trigger the third switch.

REFERENCES:
patent: 3357008 (1967-12-01), Walsh
patent: 3408513 (1968-10-01), Cooper et al.
patent: 3435256 (1969-03-01), Young
patent: 3821565 (1974-06-01), Horinaga
patent: 3911886 (1975-10-01), Nagasawa
patent: 3963945 (1976-06-01), Colyn
patent: 4010726 (1977-03-01), Kondo et al.
patent: 4170207 (1979-10-01), Boyama
patent: 4346690 (1982-08-01), Anderson

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