SU1757089A1 - Shaper of duration of pulses - Google Patents

Abstract

The invention can be used to generate pulses depending on the code being set. The shaper contains a pulse generator 1, an encoder 2, a switch 3. a counter 4, triggers 5. 8, 11, a button 6, an element AND 7, a shaper of short pulses 9, 10, an element OR 12, 1 Il.

Description

00

Yu

The invention relates to a pulse technique and can be used for pulse waveforms depending on the code being set.

A pulse shaper is known that contains a serially connected clock, an I element, a pulse counter and a trigger, the first output of which is connected to a second trigger input, and an encoder, whose information inputs are connected to the outputs of control pulses, and the outputs to counter inputs pulses, the second output of the trigger is connected to the control input of the encoder, the outputs of which are connected to the inputs of the OR element.

The disadvantage of the former is the impossibility of setting the necessary pause between pulses.

The closest in technical essence to the proposed invention is a shaper comprising an encoder, successively connected clock generator, AND element, pulse counter, the setup inputs of which are connected to the encoder's outputs, OR element, whose output is connected to the trigger output, and outputs bus Start and inverse output of the higher discharge counter, the direct output of which is connected to the second input of the element I, shapers of short pulses, the inputs of which are connected to the trigger outputs, and the outputs to the control encoder inputs.

The disadvantage of this driver is the impossibility of forming a pulse, starting with a predetermined front.

The purpose of the invention is to expand the functionality by setting the initial front of the generated pulse.

The goal is achieved by the fact that a driver that contains an encoder, a counter, a clock generator, an AND element, an OR element, a first trigger and a short pulse shaper connected between the outputs of the first trigger and the control inputs of the encoder, whose information inputs are connected to the input buses, and outputs - with information inputs of the counter, the counting input of which is connected to the output of the element I, the first input of which is connected to the output of the clock generator, the second and third tons are additionally introduced riggers, a button and a switch, the central output of which is connected to the bus Reset and the reset input of the counter, a normally closed output - with the setting one, and a normally open output - with the reset input of the first trigger, the counting input of which through the button is connected to the inverted output of the high digit of the counter the direct output of which is connected to the fault input of the second trigger, the setup input of which through the OR element is connected to the outputs of the short pulse shapers, and the output of the second trigger is connected to the second input element And and C-input of the third trigger, the D-input of which is connected to the forward output of the first trigger.

5 The drawing shows a diagram of the former.

Shaper pulse duration contains the generator 1. encoder 2, switch 3, counter 4, the second trigger 5,

0 button 6, element 7, first trigger 8, drivers 9, 10 short pulses, third trigger 11, element OR 12, the output of which is connected to the setup input of the second trigger 5, and inputs through the generators 9, 10 with the outputs of the first trigger 8, and directly with the control inputs of the encoder 2, the outputs of which are connected to the information inputs of the counter 4, the fault input of which is connected to the bus

0 Reset and via a normally closed contact - switch 3 with a setting contact, and through a normally open contact - with the fault inputs of the first trigger 8, the counting input of which through button 6 connects 5 to the inverse output of the high digit of counter 4, the forward output of which is connected to the reset input of the second trigger 5, the output of which is connected to the C input of the third trigger 11, the second input

0 of the element 7, the first input of which is connected to the output of the generator 1, and the output to the counting input of the counter 4, at the same time the D input of the third trigger 11 is connected to the direct output of the first trigger 8.

5 Shaper works as follows.

To bring the circuit back to its original state, switch 3 is set to the opposite position

0 button 6 is pressed and a bus signal is given Reset. In this case, the trigger 8 is set to the state opposite to the desired one, and the generation does not occur due to an open circuit created by the button b.

5 Then the switch 3 is set to the required position, the button 6 is in the released position, and a bus signal is given. A reset is triggered by the counter 4 and the trigger 5. The trigger 8 is moved to the opposite state, in one of

of its outputs, a differential occurs, which is converted by the shaper 9 (10) into a short pulse, which allows writing an additional pulse or pause code to counter 4.

By the signal from the output of the element OR 12, the trigger 5 is set to 1, allowing the passage of clock pulses from the generator 1 to the counting input of the counter 4. By zeroing the counter 4, the element AND 7 is blocked and the trigger 8 is transferred to the opposite state by a differential at its output through the driver 9 ( 10) allows writing through the encoder 2 to the counter 4 of the additional code of the pause or pulse. The process then repeats. On the trigger 11, an output pulse is formed depending on the state of the trigger 8 and on the differential at the output of the trigger 5 from O to 1.

The proposed shaper allows generating a pulse starting from a predetermined front, which expands the functionality of this technical solution.

Claims (1)

Invention The Pulse Length Shaper, comprising an encoder, a pulse counter, a clock generator, an AND element, an OR element, a first trigger, and short pulse drivers connected between the outputs of the first trigger and the control inputs of the encoder, the information inputs of which are connected to the input buses, and the outputs - with information inputs of the pulse counter, the counting input of which is connected to the output of the clock pulse 0 This method is characterized by the fact that, in order to extend the functionality by ensuring the formation of a pulse, starting with a predetermined front, the second and third 5 triggers, button, switch, the switching contact of which is connected to the bus Reset and the reset input of the pulse counter, the opening contact - with the installation, and the closing - with the reset input 0 of the first trigger, the counting input of which, via a button, is connected to the inverted output of the higher bit of the pulse counter, the direct output of which is connected to the reset input of the second trigger, the setup input 5 of which through the OR element is connected to the outputs of short pulse shapers, and the output of the second trigger is connected to the second input of the element AND and the C input of the third trigger, the D input of which is connected to the forward output of the first trigger