SU1274134A1 - Device for selecting single pulse - Google Patents

Abstract

The invention relates to a pulse technique and can be used in automation and computing devices. The purpose of the invention is to increase the reliability of work while simplifying the device. To achieve this goal, the second trigger is made of RS -type 2, in addition, the pulse shaper contains the first trigger 1, element 3, switch 4, two resistors 5 and 6. The introduction of this element and the corresponding functional connections allowed us to simplify the design of the device and improve it reliability. This improves the synchronization of the output pulses to 1 mp pulses. 3 il.

Description

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The invention relates to a pulse technique and can be used in automation devices and computer engineering.

The purpose of the invention is to increase the reliability of work while simultaneously simplifying the device.

FIG. 1 shows an electrical circuit diagram of the proposed actuator; in fig. 2 and 3 are temporary diagrams that explain his work.

The pulse shaper contains the first and second triggers 1 and 2 1K-type and RS-type, element H 3, switch 4, the switching contact of which is connected to the common bus, the closing and closing contacts

respectively with R-n, 8-inputs of the second trigger and respectively through the first and second resistors 5 and 6 with the power supply bus 7, the I and K inputs of the first trigger are connected to the control bus 8, the inverse output with the first input of the IZ element, the second input of which is connected to the input of the second trigger 2 and the bus 9 clock pulses, the third input direct output of the second trigger 2, the output to the output bus 10 and the C input of the first trigger 1, which is connected to the third input of the element I 3, the fourth the input of which is connected to the R-input of the second trigger 2.

The device works as follows.

In the formation of a single

impulse when power is turned on from the closing contact of the switch 4 to the R input of the trigger 2 (Fig. 2a) and the fourth input of the element I 3 receives a logical zero signal, and input S (Fig. 2b) receives the signal of the logical unit from the normally open contact. Element And 3 is closed at the fourth entrance. On the bus 7 (fig. 2e) - high potential.

Suppose that when the power is turned on the triggers 2 and 1 are established in single states. Then, on the falling edge of the first clock pulse arriving on the bus 9 (Fig. 2c), the trigger trigger 2 is zeroed. A low potential from its single output (Fig. 2d) zeroes the output trigger 1, at the zero output of which (Fig. 2g) a high potential is established.

When the closure contact closes once and closes the break contact on the trailing edge of the nearest clock pulse, trigger 2 is triggered, the zero signal is removed from the input of trigger 1 and the element 3 is enabled. The next clock pulse comes from the output of element 3 (Fig. 2e) On the bus 10 of the device and simultaneously on the C input of the trigger 1, I installed it on the trailing edge into a single state. Low potential with inverse trigger output

1 closes the first input element And 3, prohibiting the passage of clock pulses on the bus 9 of the device. When the opening contact is opened and the closing contact is closed on the falling edge of the nearest clock HMnyjtbca, the driver returns to the initial state.

If it is necessary to receive a series of pulses on the bus 10 of the generator, then in the initial state, the bus 8 (Fig. Ze) is given a command in the form of a logical zero, which blocks the trigger I at the inputs IK. After switching the switch 4 and setting the trigger state to one.

2 (fig. 3g), the second and all subsequent clock pulses pass from bus 9 (fig. Sv) through element 3 to bus 10 (fig. Rear) of the driver. The first impulse after removing a logical zero from bus 8 sets trigger 1 to one state. A low potential from its inverse output (Fig. ЗЖ) closes the element I 3 at the first input, prohibiting the passage of clock pulses to

0 bus 10 device ..

When the opening contact is opened and the closing contact is closed, the driver returns to the initial state in the same way as shown in FIG. 2,

Claims (1)

Formula invented and A pulse shaper containing an element I, the output of which is connected to the output bus and to the C input of a 1K-type trigger, the I and K inputs of which are connected to the control bus, the R input to the output of a RS 5 type trigger, and the inverse output to the first input of the element And, the second input of which is connected to the clock pulse bus; the R and S inputs of the trigger are connected respectively to the closing and opening contacts of the switch and respectively through the first and second resistors are connected to the power bus, and the switching contact of the switch is connected to a common tire, characterized in that, for the purpose of Improving reliability with simultaneous simplification of the device, direct output of the K5 trigger, a -type connection with the third input of the And element, the fourth input of which is connected to the R-input of the second trigger of the RS -type, C-input of which is connected to the same pulse. FIG. 2