Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
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
328185, F02P 1700
Patent
active
040104192
ABSTRACT:
An automobile engine ignition analyzer with engine performance displayed on an oscilloscope. Circuitry for providing timing indicia on the oscilloscope trace in the form of high intensity spots or gaps, with the time intervals between indicia maintained constant as engine speed varies. A pickup for coupling the engine ignition pulse to a pulse shaping circuit which provides an output pulse related in time to the ignition pulse, and an oscillator started by the output pulse and providing a train of pulses at predetermined intervals, typically one millisecond, with the pulse train connected to the oscilloscope beam intensity control for blanking or intensifying the beam as desired.
REFERENCES:
patent: 3603879 (1971-09-01), Pelta et al.
patent: 3638107 (1972-01-01), Pelta et al.
patent: 3701954 (1972-10-01), Seminatore et al.
patent: 3714499 (1973-01-01), Pelta et al.
patent: 3798965 (1974-03-01), Pelta et al.
Reeves George I.
Richards Donald D.
Beckman Instruments Inc.
Harder P. R.
Krawczewicz Stanley T.
Steinmeyer R. J.
Streck D. A.
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