Circuit arrangement for suppressing output pulses in converting measuring values with the aid of a voltage-frequency converter

Claim 1

A FREQUENCY-RESPONSIVE IMPULSE-CONDUCTION CIRCUIT OPERATIVE TO EFFECT A SUPPRESSION OF SUCH IMPULSES WHEN THE FREQUENCY OF SUCH IMPULSES ATTAINS A GIVEN VALUE, COMPRISING INPUT TERMINAL MEANS AT WHICH THE IMPULSES TO BE CONTROLLED ARE RECEIVED, OUTPUT TERMINAL MEANS AT WHICH SIGNALS, OF THE SAME FREQUENCY AS THE INPUT IMPULSES, ARE TO BE AVAILABLE, CIRCUIT MEANS OPERATIVELY CONNECTING THE INPUT AND OUTPUT TERMINAL MEANS FOR CONDUCTING IMPULSES FROM THE INPUT TO THE OUTPUT TERMINAL MEANS, IMPULSESUPPRESSING MEANS INTERPOSED IN SAID CIRCUIT MEANS FOR SELECTIVELY SUPPRESSING THE PASSAGE OF IMPULSES TO SAID OUTPUT TERMINAL MEANS, AND MEANS OPERATIVELY CONNECTED TO SAID CIRCUIT MEANS FOR ENERGIZING SAID SUPPRESSING MEANS TO SUPPRESS THE DELIVERY OF IMPULSES TO THE OUTPUT TERMINAL MEANS WHEN THE FREQUENCY OF THE INPUT IMPULSES ATTAINS SAID GIVEN VALUE, WHEREIN SAID CIRCUIT MEANS COMPRISES A MONO-STABLE FLIP-FLOP STAGE OPERATING WITH A GIVEN TIME CONSTANT, TO WHICH THE IMPULSES APPEARING AT SAID INPUT TERMINAL MEANS ARE CONDUCTED, SAID SUPPRESSING MEANS COMPRISING A COINCIDENCE CIRCUIT CONTROLLED BY SAID IMPULSES FOR SUPPRESSING ALL THE IMPULSES THE TEMPORAL SPACING OF WHICH IS GREATER THAN THE TIME CONSTANT OF SAID FLIP-FLOP STAGE.