SU1569971A1 - Switching device - Google Patents

Abstract

The invention relates to electronic switching and can be used to turn on and off electrical circuits in any order. The purpose of the invention is to expand the functionality of the device, consisting in that again pressing any control button shuts down the corresponding electrical circuit. The switching device in each cell contains a counting trigger 5, D-flip-flop 6, element AND 7. When you press any button, for example 1.1, the shaper of 3 channel 2.2 pulses transmits a pulse to the information input of D-flip-flop 6 and to the input of the element OR 8, from the output of which the signal goes to the clock inputs of all D-flip-flops 6 and sets their outputs to a unit, which removes the zero setting at the R input of the counting trigger 5. After a time specified by the delay element 4, one is recorded at the output of the counting trigger 5. A single signal appears at output 9.1. When the button 1.1 is subsequently pressed, the output state of the D-flip-flop 6 does not change, and at the output of the counting flip-flop 5 and at the output 9.1, the time specified by the delay element 4 is zero. 1 il.

Description

The invention relates to electronic switching and can be used in devices for various purposes to turn on and off used electrical circuits in random order.

The purpose of the invention is to expand the functionality of the device, due to the fact that the repeated pressing of a control button disables the corresponding electrical circuit.

The drawing shows a functional electrical diagram of a switching device.

The switching device contains the control buttons 1.1-1.N of the channels 2.1-2.N, each of which consists of <• 3 pulse shapers 3, delay element 4, counting trigger 5, D-trigger 6 and AND 7 element, OR element 8, outputs 9.1-9.Ν device, reset button 10.

The switching device operates 25 as follows.

In the initial state, the device is set by the signal of the reset button 0, with all outputs 9.1-

9.Ν a signal of zero ed level is generated.

When, for example, button 1.1 is pressed, the pulse shaper 3 of channel 2.1 gives a pulse to the information input of the D-flip-flop 6 and to the input of the element I. ПИ 8, from the output of which the signal of the logical unit, delayed by the time of propagation through the element OR 8, is fed to the clock inputs all D triggers. A single voltage level is written along the front of the pulse to the output of the D-trigger 6, which removes the setting to zero on the R-input of the counting trigger 5. After this, after a time specified by the delay element 4, a unit is written to the direct output of the counting trigger 5. output 9.1 device appears

G Q is a logical unit signal. On the other outputs of the device 9.2-9.Ν there is a logic zero level. When the button 1.1 is pressed further, the output state of the D-trigger 6 does not change, and at the output of the counting trigger ze 5, after a time specified by the delay element 4, a zero voltage level appears. The state of output 9.1 will change from single to zero. The switching device also disconnects the previously connected circuit in any random order. Suppose there was a signal at output 9.2. In this case, at the direct outputs of the corresponding counting and D-flip-flops of channel 2.2 there is a unit level. When, for example, button 1.1 is pressed, the signal from the output of the OR element 8 goes to the clock inputs of all D-flip-flops, while the direct output of the D-flip-flop 6 of channel 2.2 is recorded at zero voltage level, since at that time there are 3 pulses at the output of the driver channel 2.2 there is a zero voltage level. This voltage level resets the counting trigger 5 of channel 2.2 and the state of output 9.2 becomes zero. In this case, the output state 9.1 becomes single.

Claims (1)

Claim A switching device containing N control buttons, a Reset button, an OR element, the first contact of the control buttons and the Reset button is connected to a common bus, the second contact of the control buttons is connected to the input of the corresponding channel of the switching device, each of which contains a pulse shaper and an element delays, the inputs of which are connected to the input of the channel, the output of the shaper of each channel is connected to the corresponding input of the OR element, characterized in that, in order to expand the functionality of the device, each channel has a counting trigger, a D-trigger, an And element, the output of the delay element is connected to the clock input of the counting trigger, the output of which is connected to the first input of the And element, the second input of which is connected to the R input of the counting trigger and the output of the D-trigger, whose D-input connected to the output of the pulse shaper, and the clock input to the output of the OR element, the output of the And element of each Konchay connected to the corresponding output of the switching device, the second contact of the reset button, connected to the R input of the D-trigger of each channel.