SU1352631A1 - Selector of pulses by rate of rise - Google Patents

Abstract

This invention relates to electrical measuring technology and can be used in time and amplitude pulse analyzers. The purpose of the invention is to increase the speed, achieved by ensuring that the pulse can be applied to the presence of a useful signal at the moment before the end of the rising edge of this signal. To do this, an RS-trigger 5 is additionally introduced into the device containing comparators 1, 3, and 4, a sawtooth voltage generator 2. The advantage of the proposed pulse selector compared to the prototype is that the analysis of the pulses examined by a signal has a useful signal or interference on the rate of increase, which increases the speed selector pulses. The operation of the pulse selector is explained in the time diagrams provided in the specification. 2 Il. S (L 0 and YOU. (Pui.i

Description

The invention relates to a pulse technique, an electrical measuring technique and can be used in. time and amplitude pulse analyzers.

The aim of the invention is to increase the speed of action by ensuring that it is possible to generate a pulse about the presence of a useful signal at the moment before the end of the rising edge of this signal.

FIG. 1 shows a structural electrical circuit of the device; in fig. 2 - time diagrams that show his work.

The device contains the first comparator 1, the generator 2 sawtooth voltage, the second and third comparators 3 and 4, RS-trigger 5, the inputs of the first and second comparators are connected to the input bus, the output of the first comparator 1 is connected to the input of the generator 2 peep voltage and to the second input of the RS flip-flop 5, the first input of the third comparator 4 is connected to the output of the sawtooth generator 2, and the second input to the output of the second comparator 3, the output of the third comparator 4 is connected to the first input of the RS flip-flop 5, output. which is connected to the output bus.

The device works as follows.

Electrical impulses interference and

{the useful signal (U) is fed to the inputs of the first and second comparators 1 and 3 (Fig. 2cf) and compared with threshold voltages, with the threshold level of the first comparator 1 (U ,,,) below the threshold of the second comparator 3 (Un) Upon reaching the amplitude „1 of the desired signal or interference

threshold level U and U, the first 1 and second 3 comparators produce pulses at their output (fig 2, §) -, and when a pulse appears at the output of generator 2, it generates a sawtooth voltage at the output (fig 2a) with such a slope buildup K

- so that the useful signal has a large

this steepness

D1i ut

- Un,

to - t,

threshold voltage first

comparator 1; threshold voltage of the second

comparator 3;

the difference between the response times of comparators 1 and 3, determined by the rate of increase of the pulse under study.

The third comparator generates a pulse of duration T, (Fig. 2a) during (t,) coincidence of the amplitudes of the voltages from the output of the generator 2 (Fig. 2d, impulse 1) and from the output of the comparator 3 (Fig. 21, impulse 2). In the event that the amplitude of the pulse from the output of the comparator 3 does not exceed the amplitude of the pulse of the generator 2 (FIG. 2d), the pulse at the output of the third comparator 4 does not appear, which indicates that there is a disturbance at the given moment. The impulse from the output of the third comparator 4 is expanded by an RS trigger to the duration Z t-) - t, where t, is the end time of the impulse from the output of comparator 1; t is the response time of the comparator 3.

Claims (1)

Invention Formula The growth rate pulse selector containing the first and second comparators, the signal inputs of which are connected to the bus of the analyzed signal, the sawtooth generator, the third comparator, the first input of which through the lilometer voltage generator is connected to the output of the first comparator, that, in order to increase speed, an RS-trigger is introduced into it, the first input of which is connected to the output of the third comparator, the second input of which is connected to the output of the second comparator, the second input of the RS-t iggera connected to the output of the first komparatdra, and output - with output bus. % aun n, and but Editor L. Povhan Compiled by A. Chist Kova Tehred L. Serdyukova Order 5576/56 Circulation 900 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 FIG. 2 Proofreader V. Girn to