SU496669A1 - Timer Shaper - Google Patents

Description

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The invention relates to a pulse technique and can be used in operating electronics, devices for storing a time interval.

Known formatirovat the time interval containing the delay device, the first trigger and the element And, in which three inputs of the device. Delay and one input of the trigger connected to the sources of input signals, and the output of the first trigger connected to the input element I.

To increase speed (increase the ratio of the maximum duration of the memorized time interval to the generation period), a trigger is inserted into the shaper, the output of which is connected to another input of the AND element, and the separate and counting inputs are connected respectively to the input source and one output of the delay device, while counting the input of the first trigger is connected to another output of the delay device.

I At 4app. 1 is given a structural electrical circuit of the time interval generator; in fig. 2 - time diagram, explaining the principle of its work. The shaper of the time interval consists of a delay device, which consists of a ring circuit in series of coefpiHeHHbix delay cells 1-1, 1-2,. , 1- ft, the first 2 and second 3 triggers and the logical element And 4.

Temporary willow shaper works; terval as follows. The initial state of the imager is indicated by the time interval O-in the time diagram (see {1G. 2).

With the arrival of pulses and and and, 2

front (which correspond to a given interval, run the cell

Claims (1)

holders 1-1, and 1-k, forming pulses, the duration of which is determined by the pair-. meters, the time of the driver circuits of these delay cells 1-1 and 1-k. From the rear ({ontov of these pulses, 1 and 2 and 1-hk-1 delay cells start respectively. Each. Next delay cell is triggered from the back of the pulse of the pulse, which was written by the previous delay cell. Delay device, which is an annular circuit of series-connected cells delay enters the generation mode from the leading edges of the pulses of the delay cells 1-1 and 1-k, trigger 2 and 3 is triggered, the outputs of which are AND, AND by means of the AND 4 logic element form pulses, l (Z7 ;. r -VJ- fJf / V o where: t is the number of periods 7 / —the pulse duration, which forms a delay cell whose duration does not affect the parameters; the time of the defining delay cell elements exactly reproduces the specified time interval t, tf The initial state of the trigger 2 and 3 is set signal I. The memorization of a new time interval can be reconstructed after a generation failure, for example, an AND signal acting on one or several delay cells. For normal operation of the time interval generator, it is necessary either to choose the correct delay cell number, input 1X into the delay device 1 with the specified recovery time, or to correctly select the recovery time t in the delay cells when developing them. At the same time, the speed of this time shaper is higher than the speed of the known device (the ratio of the maximum duration of the memorized time interval (, - t.-) X and TCOC to the generation period of the ring circuit of serially connected delay cells T). Claims of Invention A time interval former comprising a delay device, first. Trigger n element And, in which the three inputs of the delay device and one input of the first trigger connected to the input sources. Signal, the output of the first trigger is connected to the input of the element I, and it is so that, in order to improve speed, a second trigger is inserted into it, the output of which is connected to another input of the element And, and the separate and counting inputs are connected respectively to the input source and one output of the delay device, while the counting input of the first trigger is connected to another output of the delay device. R one Ai  ife . one