SU126914A1 - Trigger on ferro-transistor cells - Google Patents

Description

In automation and computing, elemeity are widely used, representing the combination of a ferromagnetic core with a rectangular hysteresis loop and a semiconductor triode. These elements are called ferrotransistor cells. Ferrotransistor cells make up various logic circuits and elements of counting devices, including triggers with two stable states.

Lines of the ferotransistor circuit) of the 1st triggers on four ferrotransistor cells with combined single and zero inputs. In these triggers for ne; an eesod of a circuit from one state to another, besides the basic counting impulses, the auxiliary clock pulses of the generator operating synchronously with the arrival of the counting pulses are used. The presence of a synchronous clock generator limits the applicability of circuits with ferrite-transistor elements and complicates the design of the device as a whole.

Alternately, the changed 1e states of the ferrotransistor trigger can be provided without clock pulses, if we introduce into the trigger circuit the so-called record windings with a predominance. The presence of current in the predominant winding ensures a change in the state of the ferrite cell, regardless of the currents in other windings. Circuits for ferrotransistor triggers with write windings with a predominance are known. The main disadvantage of these cxeNr is that the output pulses taken from the windings of P1) possession and used to start the next trigger, are longer in duration than the input. In this connection, the parameters of the trigger elements in the scaler from cascade to cascade are changed, and the triggers themselves require individual adjustment.

JVI 126914- 2 -Proposed trigger circuit on ferrotransistor cells has no-noted deficiencies. The trigger works without clock pulses and the parameters of the input and output pulses are the same. A special feature of the trngge scheme is that it contains four elementary ferritic transistor cells. Two of them are auxiliary and, for the winding of the windings, they are used to drive the other two cells, called the main ones. Thanks to iTo.vry, the impulses are longer, and the ones that are dominant in the windings, are not sent to the TRINGGER OUTPUT and their circuits, they are circled, and are closed inside the circuit.

A functional diagram of a pre, triggered lane is shown in FIG. 1, and its prnntsnpnalna scheme-to fng. 2. The arrows indicate the directions of the currents that occur when the circuit transitions to the state of "1 nl" O, indicated by the corresponding numbers in the base of the arrows. The numbers at the end of the arrows conditionally indicate the state to which this core can be transferred if there is current in the corresponding winding. Double arrows indicate windings with a predominance; Cells 1 and 2 are main, cells 5 and auxiliary. From counting input 5, counting pulses arrive. The counting input 6 serves to reset the trnger to its initial state. At terminals 7 and 8, single and zero output pulses are realized, respectively.

Auxiliary cells are distinguished from the main by the number of turns of the unmarked recording. In the auxiliary cells 3 and 4, the record winding 10 (FIG. 2) is common; in the main cells / and 2, the winding 14 of the record ensures the predominance and, in connection with the ethnm, contains a greater number of turns. In addition, in the auxiliary cells to increase the duration of recording pulses entering the recording windings 14 with the main cells predominating, the number of turns of the base windings 12 is large and the additional resistance / 5 is reduced. Due to this, the resulting magnetizing current in the auxiliary cells is shorter and, therefore, the time is reversal of the output pulse duration is longer than in the main ones.

The operation of the circuit occurs in a single way.

Winding 13 is used to set the trigger to the initial state. When a pulse is applied to this winding, the cores of the cells Y are set to state "1, and cells 2 and 4 to state" O.

During the operation of the trigger, counting input 5 in the windings 9 of charging off the cells 7 and 2 receives pulses of a shock from the previous stage. When the receiver receives the first, carry the settings of the initial state of the counting pulse, the core of the cell / is transferred to the state "O. The 11 p.pulse of current that arises in the collector winding ensures that the core of cell 3 is transferred to the state "O" and simultaneously can be used as a single output pulse from terminal 7. The transition of the supportive cell 3 to a new zero state is accompanied pulse in its collector winding //. This impulse, in turn, acts in two directions: on the winding 10 of the core 4 recordings (ensures that this core is transferred to the state “1) and on the winding 14 records with the core of the cell 2 predominant.

Thus, the core of cell 2 is under the influence of two current pulses simultaneously: a counting pulse arriving through the write-off winding 9, which seeks to maintain the initial state "On the core, and the current pulse in the winding 14 of the recording with a predominance that seeks to transfer the core to a new state “1. Since the current pulse in the winding 14 has a longer duration, and if the coil contains a larger number of turns, the core of cell 2 is transferred to the state "I.

As a result, after the end of the first counting pulse, the cell cores are in the following states: the cell cores / and 3 are in the state "o, the cores of cells 2 and 4 are in the state" 1, i.e. In general, it is the reverse of the original.

The initial state of the circuit is transferred by the second counting pulse, and the beginning of the npOTtecca tilting of the circuit is the occurrence of a current pulse in the collector winding 11 of the core of cell 2. This current pulse excites a longer pulse at the core output of cell 4 and simultaneously can be used as a “zero” output pulse from terminal 8.

It is significant that longer duration pulses, which provide predominance in the respective windings, are used only to overwrite the state "1 from one cell to another and the output of the circuit does not Pass." The inclusion of the base windings / 2 of all cells is such that the pulse in the collector winding has place only when the core transitions from state “I to state”.

Subject invention

A trigger on ferro-transistor cells using a dominant write circuit, characterized in that, in order to obtain equal input and output pulse parameters without using a clock generator, powering the output circuit and the winding circuit of one trigger arm connected to the input of the other arm produce t, respectively, respectively from the main and auxiliary cells constituting the given trigger arm.

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