A circuit for supervision without possible failure of periodic impulses. (Machine-translation by Google Translate, not legally binding)

摘要

A circuit for monitoring without possible failure of periodic pulses, with each periodic pulse assigned to an operation and the pulses being introduced into at least one device, characterized in that the periodic pulses (t fig. 1) at the same time that they are introduced into the device or devices (gr) are applied to a flip-flop (ff) designed as a frequency divider, which is followed by two square wave oscillators (a and b) of the same design whose inputs (el and e2) ) are applied directly and through an investor (jl), respectively The square waves of tension (u1) that appear at the exit of the flip-flop and whose natural frequencies are determined by their relationships ** (see formula) ** Y ** (see formula) ** Between the periods (ti and t2, fig. 2a) of the square wave voltages (ul and u2) and the periods (ta and tb) of the square wave oscillators (a and b); because the square wave voltages (ul, u2 and ua, ub) that appear in the inputs (el and e2, fig. 1) and in the outputs (al and a2) of the square wave oscillators (a and b) are taken to an evaluation device in it, the periods or fronts (or both) of the square wave voltages (ul, ua and u2-, ub, respectively) that appear in the inputs and outputs of said square wave oscillators, and because in the case of an inequality of the respective periods or of the number of fronts (or of both at the same time), an error message is sent. (Machine-translation by Google Translate, not legally binding)