SU1129717A1 - One-shot multivibrator - Google Patents

Abstract

ONE SELECTOR by author. St. No. 980256, characterized in that, in order to expand the functionality by ensuring the generation of a burst of pulses of different duration distributed over the outputs, in the presence of a synchronization pulse and the possibility of transferring the device to the self-oscillating mode, N pulse-width drivers and a switch are inserted in it, short pulses are connected to the corresponding address output buses of the device directly, and their outputs are connected to the input buses of the device through a switch.

Description

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The invention relates to a pulse technique and can be used in devices: automation, computing, radar as multiphase synchronizers, address shaper, discrete delay lines, etc.

On the main av- sv. No. 980256 known one-shot containing the first R5-trigger, the output of which is connected to one of the inputs of the element 2I-NOT, the output of which is connected to the S-input of the first RS-flip-flop and the timing of the driving capacitor, the second facing of which is connected through the matching cascade repeater to the inverter input, the output of the inverter is connected to the second input of element 2I-NOT, and the input of the matching stage is connected via a diode connected in the opposite direction to the common power supply bus, the element OR-NOT to N inputs, each of which is connected ep consisting of serially connected second -triggera, R -Log which is connected to an input device bus and via a resistor connected to the common bus time zadak Oleg Zhegoyev resistor, a controllable switch, wherein the controllable switch is connected to the input. (By the code of the second R5 flip-flop, and the time of the master resistor is controlled by a switch with a common bus, the S input of the second RS trigger is connected to the output of the inverter, the second ends of the time of the drive resistors are combined and connected to the input of the matching stage, and the output of the OR NOT connected to the R input of the main R5 trigger DJ.

The disadvantages of this device are the absence of the possibility of issuing a burst of pulses distributed over individual outputs, in the presence of synchronization pulses at any input, and the inability of the device to operate in self-oscillatory mode.

The purpose of the invention is to expand the functionality of the device by ensuring the generation of a burst of pulses of different duration distributed over the outputs, in the presence of synchronization pulses and the possibility of transferring the device to a self-oscillatory mode.

To this end, the device containing the first R5-flip-flop, the output of which is connected to one of the inputs of the element 2I-NOT, the output of which is connected to the 5-input of the first RS-trigger and the timing of the setting capacitor, the second lining of which through the matching cascade the repeater is connected to the input of the inverter, the output of the inverter is connected to the second input of element 2I-NOT, and the input of the matching stage is connected via a diode connected in the opposite direction to the common power supply bus, element OR-NOT, to N -inputs, each of which connected Chain consisting of the second R5 trigger connected in series, the R input of which is connected to the device input bus and connected via a resistor to a common bus controlled by a switch, the time of the master resistor, while the controlled input of the switch is connected to the output of the second RS flip-flop and the time of the master resistor is controlled by a shared key with a common bus, the 5th input of the second RS trigger is connected to the output of the inverter, the second ends are the time of the setting resistors combined and connected to the input of the matching stage, and the output of the RSHI-NE element is connected to the R input first {5-flip-flops, N short-pulse formers (FCIs) and a switch are entered, the inputs of the FCI are connected to the corresponding address output buses of the device directly, and their outputs are connected to the device's input buses through the switch.

The drawing shows a structural diagram of the device. Ll simplicity rendered only three chains introduced (N 3). .

The device contains an N-input element IPI-NOT 1, the output of which is connected to the R-input of the first R5 trigger 2. The output of the latter is connected to the second input of the element 7. AND-NO 3, the output of which is connected to the 5 input of the trigger 2 and the time plate of the capacitor 4, and the second capacitor plate is connected via diode 5 to the common power supply bus and via matching repeater cascade 6 to the input of inverter 7, the output of which is connected to the input of element 2I-IE 3, also contains resistors 8, 9 and 10, second H5 triggers 11, 12 and 13, the time setting resistor 14. Inputs dnovibratopa connected to; R-inputs of the second flip-flops 11, 12, 13 and through the resist ry 8, 9 and 10 - to a common bus power source. The outputs of the second flip-flops 11, 12 and 13 are connected to the controllable inputs of switches 15-17, connected in series with the time defining resistors 14, 18, 19 and to the inputs of the short pulse conditioners 20, 21 and 22, the outputs of which are connected to the switch 23, and the switch outputs are connected to the input busbars of the device 24, 25, 26. The short pulse driver is a generator that operates on the output pulse decay due to the delay of signal propagation in the logic elements and does not have a capacitor. Both the electronic key circuit and the mechanical switch can be used as a switch (jumpers can be used in private rooms). The switch serves to connect the corresponding FCI to the required input of the device in order to start the device on this input with a pulse formed by the FCI fio to the falling edge of the previous pulse. The device works as follows. In the synchronized pulse generator mode, the output, for example, FCI 22 is connected via switch 28 to bus 26, FCI 20 output to bus 25, FCI 24 output is open, a positive polarity pulse is generated at the input (for example, bus 24) of the sync pulse. with for f, defined by the value of the capacitor 4 and resistor 14. Upon termination of the pulse IX, the last edge starts the FKI 22, which produces a short pulse of positive polarity, coming through the switch 23 to the bus 26 and starting the device through this the entrance. A pulse 2z is formed on the output bus 28 with a duration determined by the capacitor 4 and the resistor 19. The process is repeated in a similar way. The impulse with the FKI 20 enters the bus 25 and generates a pulse E at the output bus 29, the duration of which is proportional to the capacitor 4 capacitance and the resistance of the resistor 18. Since the FKI 21 output is open, after issuing the third pulse the device returns to its initial state before the next clock pulse to bus 24. If under this state of the switch 23 a clock pulse is applied to the bus 26, then only pulses will be generated to you} device. N - 1. Thus, when applying clock pulses to the 2nd, 3rd, 4th, etc. the inputs (at the given position of the switch) at the output will be formed respectively N-1, N-2, N-3, etc. pulses in a pack, the duration of which is determined by the capacitance of the capacitor 4 and the value of the connecting resistors 14, 18, 19 and so on, respectively. When switching the output of the last FCI 22 to the first output (24), the one-shot turns into a self-oscillating ring multiphase multivibrator with pulse durations determined by a common capacitor 4 and the values of connected time of the driving resistors 14, 18 and 19 switched on FFIs, and the order of durations is determined by the switch. Thus, the proposed one-shot as compared to the base object, for which the prototype is adopted, has the following advantages: when operating in the synchronized generator mode, a burst of pulses allows to obtain N discrete values of pulse durations, both distributed over the address outputs and combined the outputs, the order of pulses of different durations, are determined by the position of the rotator and can be changed from clock to clock; the number of pulses in a packet is determined by both the number of connected FCIs and the input address to which the clock is applied.: pulse, and can be from N to 1j when operating in self-oscillating mode, it can receive from 1 to N discrete values of pulse durations

S11297176

In the cycle, the order of which. The presence of only one condensate i and the quantity determined by the position of the par determines the same stability of the switch i, - "The capacity of the generated pulses.

Claims (1)

. SINGLE-VIBRATOR by bus St. No. 980256, characterized in that, in order to expand the functionality by providing a packet of pulses of different durations distributed over the outputs, in the presence of a synchronization pulse and the possibility of transferring the device to self-oscillating mode, N shapers of short pulses and a switch are introduced into it, and the inputs short pulse shapers are connected directly to the corresponding address output buses of the device, and their outputs are connected to the input buses of the device through the switch.