Low voltage powered electrical tachometer for engine

Details Low voltage powered electrical tachometer for engine Low voltage powered electrical tachometer for engine

1990-03-30

1992-04-28

Snow, Walter E.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

G01P 348, G01P 354

Patent

active

051091925

ABSTRACT:
A tachometer circuit for an outboard motor wherein battery voltage is switched from a signal generated in the capacitor discharge ignition system for providing a pulsating signal to drive the tachometer of a low voltage so as to reduce the sensitivity to noise.

REFERENCES:
patent: 4190798 (1980-02-01), Fitzner
Marston, "Solid-State Tach . . ." Apr./1970 Radio Electronics, pp. 33-38.

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