Advance and retard timing light

Details Advance and retard timing light Advance and retard timing light

1975-11-26

1977-03-01

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

F02P 1700

Patent

active

040104141

ABSTRACT:
A timing control circuit for a strobe lamp for use in adjusting the timing of an internal combustion engine. A circuit which provides for retarding lamp triggering for setting ignition advance and for advancing lamp triggering for setting ignition retard. A circuit providing for advance and retard selection, the amount of advance or retard, and zero degree triggering for engines with various numbers of cylinders. A circuit with a ramp voltage synchronized with engine timing, a reference voltage for setting the amount of advance or retard, and a comparator which provides a triggering signal for the lamp when the ramp and reference voltages match.

REFERENCES:
patent: 3499322 (1970-03-01), Pelta et al.
patent: 3597677 (1971-08-01), MacCrea et al.
patent: 3638107 (1972-01-01), Pelta et al.
patent: 3650149 (1972-03-01), Howes
patent: 3813931 (1974-06-01), Rennick et al.
patent: 3863498 (1975-02-01), Gunther

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