SU481993A1 - Pulse shaper - Google Patents

Description

one

From i.OHiie oshogs to ikshulsnoy technology and can be used for fork-up individual control commands in digital devices: 1 automachine, 1S; telemechanics and computing

tehshshi

Known impaler impulses, containing the main and additional triggers and the main and additional logic elements of the match and the input

veryur; moreover, the outputs of the main hera are connected via qi1i logic matching elements q connected by the corresponding inputs of the complementary rpHi-rtpa, and ı1, the input of the basic logic matching element is connected to one of the inputs of the main trigger.

The aim of the invention is to improve the accuracy of the formation of output pulses,

For this purpose, the inverter output is connected to OD1ShM from the trigger ground inputs, and the inverter input is connected to the input from the dolly 1x of the same matching.

The invention is illustrated in drawing.

FIG. 1 shows the electrical circuit forkshrovetel; in fig. 2 - time diagrams.

The pulse forkshravatel contains the main trigger 1 with separate inputs and an additional trigger 2, an additional 3.4 and main 5 coincidence elements, S1 6, input 7 for sync pulses, input 8 for control signals, outputs 9.10, 11 shapers, output 12,13 trigger 1 and 14,15-trigger 2.

The shaper works as follows.

In the initial oscillation, at the moment of time i-Q, at the inlet 8 and outlet 7, the low level is shown (see, fig,

2, a and b) correspondingly. At the same time on the inverter inix-d

3,4, 5 zero output 15 trip-er 2, zero output 13 flip-flop 1, high voltage levels (see Fig. 2, b, e, g, and, k) respectively., On the single output 14 of the additional four tr4Pger 2 and one} the first output 12 of the main trigger D. - “low levels (see, fig. 2, d, 3,). . When a high level is applied voltage: at input 8 at the time of lashing t at the output of the additional element 3 and output 9, a low voltage level occurs, which triggers an additional trigger 2. At the same time, its output is 14 n at the output of the imaging device a high voltage level, which prepares for operation on one of the inputs of the MAIN 1X) element of coincidence 5. At the output of the IS 2 a low level of voltage is set. at the moment At the input 7 for the next low voltage sync pulses at the time t the output of the inverter 6 (see Fig. 2, c.) the highest voltage level from which the output of the main element is set. matches 5 (see, fig, 2, g) and, accordingly, at the output 11 of the former, a high ypOBeiH voltage is established. Next, the main trigger 1 is triggered, with a high ypoBeitt set at its output 12. voltages (see fig. 2, h), preparing for operation the additional element of coincidence 4, and on output 13 - low voltage level, tired additional element of coincidence 3 to its initial state (see figch 2, and, D) respectively. Thus, at the Output add; 1: 0 element of coincidence element 3 and output 9 of the former are accumulated. Continue; whose duration is equal to the duration of the CHUxpoHMnyjnaCa, which coincides in phase with the control of your sit-tal. When BbicoKOio sync pulses appear at input 7 in MQMOHi vr4; tg mening through inverter 6 by an element of coincidence element 5, BciOTCsr was installed in the original with x; py (see, Fig. 2, g) and nr SJOM Builds formation ;; ,:; The output J. 1 of the pulse, the duration f; -iTOj.) uro ravps-1, the duration of the sync imulsop pause, and the form shifted relative to the beginning of the control pulse by the duration of the sync pulses, Next, through an additional coincidence element 4, the additional trigger 2 is set to the initial state, while at the output of the imaging unit (see Fig. 2, d), the formation of a pulse, whose duration is equal to the duration of the sync pulse period, and coinciding in phase with the beginning of the control signal, ends. With further postdelivery, the sync pulses at the outputs of the coincidence element 4 and the inverter 6 appear inverse sync pulses (see Fig. 2, bc, c). When a low level appears at the input 8 for the control signals at time t, the main 1 and the additional matching element 4 are reset, Upon subsequent receipt of the control signals, the driver acts in the same way. The proposed driver with increased The accuracy of the formation of output pulses is most advisable to use synchronization devices of digital equipment for the formation of clock grids. Subject and problem ii and the pulse shaper containing the main and additional triggers, the main and donor strings of the coincidence logic elements and the inverter, the outputs of the main trigger through the matching logic gates of the coincidence, and the output of the main logic element coincide with: unite with one of the inputs of the main TRIlter, which is the fact that, in order to improve the accuracy of the fork-and-I output of outputs and switches, the output of the inverter is connected to one From inputs JIOBHOIO. the trigger, and the inverter input is connected to the input of one of the additional log matching elements.

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