Anti-hunting system for valve operator circuit

Details Anti-hunting system for valve operator circuit Anti-hunting system for valve operator circuit

1975-01-02

1976-07-20

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307232, 307247R, 318696, 318184, H03D 1300

Patent

active

039709426

ABSTRACT:
An anti-hunting system for use with a valve operator circuit which compares two trains of pulses to place a valve in the correct position. The anti-hunting system includes a J-K flip-flop circuit receiving a clock pulse train having an absolute time relationship with the input pulse trains. Also included in the valve operator circuit is a system having a shift register for controlling the energizing of the leads to a stepping motor controlling the valve position.

REFERENCES:
patent: 3069623 (1962-12-01), Murgio
patent: 3629711 (1971-12-01), Strole et al.
patent: 3688202 (1972-08-01), Naubereit et al.
patent: 3735324 (1973-05-01), Phillips
patent: 3755747 (1973-08-01), Letosky
patent: 3769595 (1973-10-01), Ooya et al.

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