DE1026359B - Gate circuit for realizing a locking gate using a magnetic core - Google Patents

Description

GERMAN

The invention relates to a novel form of a gate circuit for realizing a blocking gate. A blocking gate is understood quite generally to mean a switching arrangement which at least consists of buckets of the input to be blocked and at least one blocking input. Those sculpted on the gate Conditions are such that at the output of the switching arrangement, then and only then, a criterion z. B. a pulse may occur if only the input or inputs to be blocked are controlled. If, on the other hand, there is a blocking potential at the blocking inputs, then the output should also be de-energized remain if the inputs to be blocked have been activated.

The gate circuit according to the invention is made in the same way as known other types of gate circuits a magnetic core with an at least approximately rectangular hysteresis loop, which is associated with the various. Eihgangswickluingen is chained accordingly. According to the invention, there is the gate circuit in that there are all the windings that make up the entrances this gate are assigned, so the windings for the blocking input or the blocking inputs and for the input or inputs to be blocked, and a bias winding are linked to the magnetic core that the bias winding and the input windings by different winding sense and / or these Windings flowing through currents are coordinated so that when modulating the The inputs to be blocked are those to be blocked Inputs and fields induced via the blocking inputs cancel each other out at least so far that the core remains in the magnetization state defined by the bias, and that when not modifying the blocking inputs and the like Modulation · the inputs to be blocked an order to magnetize the core from the through the Pre-magnetization condition is reached.

A gate constructed according to the invention has the advantage that both the inputs to be blocked as well as the blocking inputs can be acted upon with pulses of the same polarity, as a cancellation the effect of the impulses due to the different winding directions with the impulse sources concatenated input signals can be easily achieved. In the case of the well-known, from directors built locking gate, however, had to the locking input in each case a pulse of opposite polarity than are fed to the inputs to be blocked, d. H. the input (s) was in any case an »inverter« upstream.

On the basis of an exemplary embodiment, the Operation of a locking gate according to the invention Gate circuit for implementation

a barrier gate
using a magnetic core

Applicant:

Siemens & Halske Aktiengesellschaft,

Berlin and Munich,
Munich 2, Wittelsbacherplatz 2

Dr. phil. nat. Hans Kaufmann, Munich,
has been named as the inventor

explained. 1 shows a magnetic core 1 with the windings I to IV, with the drawing the direction of the field induced in these windings is indicated by individual points. Fig. 1 a shows the hysteresis loop. The sizing rules are based on this figure explained, which must be taken into account so that the barrier gate meets the given conditions.

As the diagram according to FIG. 1 a shows, the Gleidhstroim field, which is indicated by the vector HG , is brought into a precisely defined position with regard to its premagnetization.

When the pulse supplied via winding I occurs, the core is reversed, so that in the output winding IV a corresponding output trigger occurs. If, on the other hand, a pulse is transmitted via winding I, a pulse is transmitted simultaneously the winding II, which results in an opposite magnetization, is fed, then there is none Magnetization of the core takes place and accordingly no occurs in the output winding either Output pulse on. The effect of the pulse supplied via winding II on the induced field so acts in the same. Direction like the direct current fieldi. The conditions of a blocking gate are atlso clearly fulfilled, since with a certain premagnetization the core is overturned when in the Winding I a current pulse flows. However, this current pulse is not able to affect the core state to change something if the effect of the premagnetization by the in the winding II flowing current pulse is amplified accordingly.

709 910/141

It goes without saying in the context of the invention easily 'possible, a · gate also with more than two entrances, e.g. B. to be provided with two to be blocked and two blocking inputs, with appropriate Assignment of the Amperewmdiungszahien can be ensured that at the output of the Switching arrangement then and nor then a pulse occurs when - at the same time both inputs to be blocked and Z. B. one of the blocking windings can be controlled.

Claims (1)

PATENT CLAIM: Gate circuit for realizing a locking gate using a magnetic core with at least approximately rectangular hysteresis loop, characterized in that all Windings that are assigned to the inputs of the gate, i.e. the windings for the blocking input or the blocking inputs and for the input to be blocked or the inputs to be blocked and a bias winding are linked to the magnetic core that the bias winding and the input windings by different winding directions and / or the windings flowing through these windings Currents are coordinated in such a way that when modulating the blocking inputs the fields induced via the inputs to be blocked and via the blocking inputs at least as such far mutually cancel out that the core is in the magnetization state defined by the premagnetization remains, and that when not controlling the lock inputs and the like Control of the inputs to be blocked a reversal of the magnetization of the core from the by the premagnetization condition is reached. [n publications considered:
Electronic Engineering magazine, May 1954, p. 198, Fig. 13b. 1 sheet of drawings © 709 910/141 3.58