Rpm-to-voltage converter

Details Rpm-to-voltage converter Rpm-to-voltage converter

1982-05-12

1984-11-13

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307228, H03K 404, H03K 906, H03K 1100

Patent

active

044828233

ABSTRACT:
An rpm-to-voltage converter for use in vehicles, in which the converter evaluates the time period between two sequential rpm pulses. This is accomplished by means of a capacitor loading and unloading in an approximately hyperbolic course, so that the inversely proportional relationship between the frequency and the period duration is evaluated for the frequency-to-voltage conversion. The primary characteristics of the converter are a capacitor which can be periodically loaded and unloaded, the exponential voltage course of which during the loading phase is followed by means of an emitter follower, and at the end of the loading procedure the voltage value proportional to the rpm is stored in a memory device.

REFERENCES:
patent: 3302110 (1967-01-01), Hopengarten
patent: 3689778 (1972-09-01), Sharp
patent: 3732437 (1973-05-01), Sharp
patent: 4056735 (1977-11-01), Caswell

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