SU145071A1 - Matching Negation Scheme - Google Patents

Description

Negative (inversion) coincidence circuits are known, made on a magnetic core powered by alternating current.

The proposed negation matching circuit is characterized in that, for simplicity, the end of the control winding of the magnetic cardiac coincidence circuit is gapped, and a matching matching circuit with a series-connected resistor and diode is connected to the beginning of the winding.

The principle of the scheme of the described scheme of coincidence with negation is shown in the drawing.

In the absence of signals at the inputs / and 2, the control winding 3 of the magnetic core of the coincidence circuit is shunted (if there is a source 4 bias) with parallel circuits: point 5, diodes 5 and 7, earth and estrus 5, diodes 6 and 7 earth. Consequently, the potential of point 5 in the absence of input signals is equal to 0. At the same point, through diode 8 and resistance 9, a variable control voltage is applied.

When two signals simultaneously arrive at inputs 1 to 2, diodes 7 and 7 will open, the potential of point 5 will rise and a current will flow in the control winding 3 of the core, as a result of which the inductive resistance of the secondary winding 10 increases and the current in the load // stops.

In the absence of at least one of the input signals, one of the shunt circuits remains open and the potential of point 5 cannot rise.

Thus, the described scheme allows, by simple means, to realize the logical function “And with negation and can find useful application in new developments.

Subject and reason (- n and

The coincidence circuit with the negative on the magnetic core, with the supply of alternating current, characterized in that, for the purpose of control, the end of the control winding of the magnetic core of the drop circuit is grounded, and its beginning is connected in parallel with the coincident circuit with a series-connected resistance and a diode.

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