Frequency to current converter circuit

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

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Details

307519, 307261, 307265, H03K 500, H03L 700

Patent

active

045982511

ABSTRACT:
A circuit (10) receives a cyclic input signal having a frequency determined by a source (11), which frequency may vary in accordance with a parameter or condition to be measured, for example. The circuit (10) very precisely provides an output current representative of the frequency of the input signal. In particular, the circuit uses a pair of regulated and different voltage (16)(17), one (16) of which is impressed upon an averaging circuit (30) for a preselected time during each cycle of the input signal, and the other voltage (17) is impressed upon the averaging circuit (30) during the time when the first signal is not connected to the averaging circuit. A control signal (V.sub.o) is developed from the averaging circuit (30) which is a function of the average of the voltage provided to the averaging circuit, and the control signal (V.sub.o) in turn is used for controlling a current control amplifier (60) and transistors (61)(62) which in turn control current flow through a load (40) connected to output terminals (36)(37) and through a feedback resistor (63). The use of regulated voltage sources (16)(17) for deriving the current control signal insures great stability, relatively low cost, and precise operation.

REFERENCES:
patent: 2824285 (1958-02-01), Hunt
patent: 3047820 (1962-07-01), Lawton
patent: 3428829 (1969-02-01), Haynie et al.
patent: 3601707 (1971-08-01), Bauer
patent: 3702942 (1972-11-01), Aguirre
patent: 3714463 (1973-01-01), Laune
patent: 3714470 (1973-01-01), Goldberg
patent: 3723891 (1973-03-01), Whiteley
patent: 3733498 (1973-05-01), Watson
patent: 3754880 (1973-10-01), Rose
patent: 3800203 (1974-03-01), Pedersen et al.
patent: 3872388 (1975-03-01), James
patent: 3991323 (1976-11-01), Przybylski
patent: 4125789 (1978-11-01), Van Schoiack
patent: 4228366 (1980-10-01), Huttemann et al.
patent: 4274016 (1981-06-01), Ghahramani
patent: 4278943 (1981-07-01), Masuda et al.
patent: 4284956 (1981-08-01), Leffmann
patent: 4366468 (1982-12-01), Yoneyama
Public Use-Mag-X-Flowmeter sold by Fisher & Porter, Warminster, Pa.
Instruction Bulletin for Mag X Flow Converter 50 PZ 1000B, Rev. 1, pp. 8, 9, 28, 29 and 30, Fisher & Porter Company, Warminster, Pa., copyrighted 1980.

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