Signal transition detector

Abstract From the Canadian patent

This transition detector is intended to supply pulses which characterize the instants the signal passes a threshold. This signal which appears, in a rectangular form is applied to a first integrator which supplies a signal which increases or decreases in accordance with the sense of the rectangular signal and to a branch which comprises a series arrangement of a delay circuit and a second integrator which is identical to the first. The outputs of the two integrators are connected to a comparator which supplies the desired pulses. At least at the start the output, of the first integrator is entered in a store at a given instant and at an instant which is so much later as the delay supplied …