SU437199A1 - Static symmetric trigger - Google Patents

Description

one

The invention relates to automation and computing and can be used to electrically simulate continuous logic logic operations and to build various technical devices.

Known static symmetric trigger auth. St. No. 221043, implemented on two transistors with diode-resistive feedback circuits. The primary windings of two pulse transformers are included in the collector circuits of transistors, the secondary windings of which are connected to each other through capacitors connected to the bases of transistors through counter-connected diodes. The sources of the compared voltages are connected to the connection points of the counter-switched diodes.

However, the known trigger does not provide the execution of continuous logic operations.

The aim of the invention is to ensure that the trigger performs logical logic logic operations.

For this, the trigger additionally contains two key elements, each of which consists of two non-moving contacts, one switching contact and a control input, with the zero output of the static symmetric trigger connected to the control input of the first key element, the single output of the static symmetric trigger connected to the control the input of the second key element, the first and second non-terminal contacts of the key elements are connected respectively to the first and second inputs of the static symmetry trigger, and the switching contacts of the key elements are connected to the output buses. The proposed device allows one to model logical operations of continuous logic, such as the choice of a truer statement (generalized disjunction) or the choice of a more false (less true) statement (generalized conjunction)

using electrical quantities (voltages).

The invention is illustrated in the drawings. FIG. 1 shows a block diagram of a trigger; in fig. 2 is a graph of input and output diagrams.

The static symmetric trigger contains a block of comparison 1, for which a static symmetric trigger is used, made according to the author. St. No. 221043, having two analog inputs for voltages Ui, Uz and two digital outputs - "single and" zero, key elements 2, 3, each of which has two fixed contacts 4, 5, one control input 6, 7

and one switching contact 8.

The fixed contacts 4, 5 of the key elements 2, 3 are connected to the terminals of the input voltages t / a, i / i, respectively.

“Zero and“ single digital outputs of block 1 are connected to control inputs 6, 7 of key elements 2, 3, respectively.

The trigger works as follows.

Comparison unit 1 performs a continuous comparison of two variable input voltages Ui and and. When the ratio of the input voltages, the block 1 is in the first steady state and to the control input 6 of the key element 2 is supplied from the "zero output of the block 1 of the control potential, as a result of which the contacts 5, 8 of the key element 2 are closed. At the control input 7 of the key element 3, the control potential is absent, with the result that contacts 4, 8 of the key element 3 are closed. In this case, the output of the key element 2 will be supplied with the voltage Umii, i.e. U, and the output of the key element 3 - f / max, i.e. t / 2.

At the point in time when the inequality changes to the opposite, i.e. when, comparison unit 1 switches to the second steady state. In this case, the control potential is removed from the control input 6 of the key element 2 and the contacts 4, 8 of this key are closed. A control potential is applied to the control input 7 of the key element 3, as a result of which contacts 5 and 8 are closed.

The output of the key element 2 will be supplied with the voltage LMHH, i.e. f / 2, and the output of the key element 3 will be max, i.e. Ui,

Thus, when two voltages are applied to the inputs of the device, the latter determines which of the voltages applied is greater (lower), and outputs this voltage to the corresponding analog output.

Regardless of the ratio of the voltages at the inputs of the device, at one of the outputs there will always be the larger of the two voltages, and at the second output there will be the smaller of the two input voltages.

Subject invention

Static symmetric trigger auth. St. No. 221043, characterized in that, in order to ensure that logical

continuous logic operations, it additionally contains two key elements, each of which consists of two fixed contacts, one switching contact and a control input, and

"The zero output of the static symmetric trigger is connected to the control input of the first key element," the single output of the static symmetric trigger is connected to the control input of the second

the key element, the first and second fixed contacts of the key elements are connected respectively to the first and second inputs of the static symmetric trigger, and the switching contacts of the key

elements connected to the output tires.

and you.

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