SU1444930A1 - Univibrator - Google Patents

Abstract

The invention relates to a pulse technique and can be used in devices for forming and processing pulse signals. The aim of the invention is to enhance the functionality by providing restarting and blocking of the signal. To achieve the goal, input buses 2 and 3 and an open output inverter 8 are connected to the one-shot, which is connected to the R-BXO- house of the D-trigger 4. The one-shot also includes an input line 1, an output line 5, a resistor 6 and a capacitor 7. In the mode restarting the device can perform the functions of converting a sequence of pulses into one pulse. 1 il.

Description

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The invention relates to chip technology and can be used in devices for generating and processing pulse signals.

The purpose of the invention is to enhance the functionality by providing restarting and blocking the signal.

The drawing shows an electrical functional device circuit.

The single vibrator contains three input buses 1-3, D-thrunger 4, output bus 5, resistor 6, capacitor 7; And the inverter 8, the input of which is connected to the input bus 2 and the C input of the D-flip-flop 4, and the output to K the input of the D-flip-flop 4, through the capacitor 7 - with a common bus and through the resistor 6 - with the output bus and the output of the D-flip-flop 4, the D-input of which is connected to the input name and the S-input to the input bus 1,

One-shot works as follows.

In the initial state on the input bus 2 there is a log level. Oj capacitor 7 is discharged; on the output bus, § is the log level. Oh, on bus 3 level log, 1,

To ensure work on the bus should be uroeni log. . When a positive-polarity impulse arrives at shica 2 along its leading edge, trigger 4 is set to a single state. During the action of the input pulse, the capacitor 7 is discharged through the open output of the controller 8.

After the end of the input pulse, the inverter closes on the output, the capacitor 7 begins to charge, and after a time determined by the magnitude of the resistor 6 and the capacitor 7j, the voltage at the R input of the D-triggerto

449302

pa 4 reaches its threshold and Trpgger 4 returns to its original state. If during the formation of the output impulse a regular impulse arrives on the bus 2, a discharge of the condenser 7 will occur, i.e. the device will restart, and after its termination the charging process will start anew.

In the restart mode, the device can perform the functions of a pulse train to a single pulse.

In the blocking mode, the bus 1 provides the log level. 1, In this case, the output bus 5 will be present level log. 1 and the device will be blocked by the C input. The device on the C-slot NJOKeT be blocked 1 but also by submitting a log, O to its B-input (bus 3). However, in this case, mo; : rm work is carried out on the P input of the mode 1: translation mode.

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Claims (1)

Formula invented A single vibrator containing a D-flip-flop, the S-input of which is connected to the first input bus, and the output — from the output gannage and through a resistor — to the R-inputs of the D-flip-flop and the first lining of the capacitor, the second lining of which is connected bus, characterized in that, in order to expand its functionality by providing restarting and blocking modes, a second and third input bus and an open output inverter connected to the R input of the D-flip-flop and the second input bus and C-input D-trigger, D-input which union of a third input bus.