Circuit for determining the gaps between the pulses and / or the frequency of recurrence of pulses of a series of pulses

摘要

P the invention relates to a circuit for determining the gaps between the pulses and / or the recurrence frequency of pulses of a series of pulses. / p & & p & in this assembly comprising a memory of the charge / discharge 1 and a comparator verifying if the measured intervals between the pulses are in the permitted range of variation and which are associated memories 11 to 16 provided for the final values of voltage input with the memory 1 and whose two 15, 16 are connected to a comparator 18, which is closed and opens in the case of a door 3 of the transmission of the final values of voltage to all the memories 11 to 16. Application in particular to the ultrasonic measurement of the cardiac frequency of the foetus / p