SU721862A1 - Pulsed electromagnetic switching apparatus - Google Patents

Description

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The invention relates to the field technique and can find application in the systems of automatic control, monitoring and communication of various equipment outputs as a pulse switching element with memory (trigger with counting).

Pulse electromagnetic memory switching devices (ferrides) consisting of a ferromagnetic core made of medium hard magnetic material, on which control windings and magnetically controlled contacts l are installed, are known. The disadvantage of such devices is the inability to control pulses of one polarity from one source of control signals on one control circuit.

Pulsed electromagnetic memory switching devices containing a ferromagnet core of a material of medium magnetic rigidity and a control winding are also known.

a switch made on the magnetically controlled contacts and intended to change the polarity of the control winding to the control signal source depending on the magnetic state of core 2 However, since the control winding in these devices is switched by contacts, reliability of devices ; high and consistent with the reliability of the contact circuits.

The aim of the invention is to increase the reliability of the device while reducing its size and weight. This is achieved by the fact that the proposed device is equipped with another control winding, one of the windings being the actuation winding and the other winding of the release winding, and the switch is in the form of two magnetic diodes arranged in the core field

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operation, and the other with a release winding, with one of the magnetic diodes having a direct dependence of the electrical coupling on the intensity of the magnetic field, and the other reverse.

The drawing is a diagram of the described device.

The device contains a ferromagnetic core 1 of material with a high magnetic stiffness, which is filled with & 2 of the pickup 2 and the release winding 3, connected in opposite way to the other. The common point of the windings is connected to the common control signal source bus. The core 1 also has a magnetically controlled contact 4, which commutes the load circuit, and the magnetoelectric 5 and 6. The magnet diode 5 has a low initial direct resistance, which increases when exposed to the magnetic field of the core. The magnetic conductor 6 has a high initial direct resistance, which drops when exposed on; its control magnetic flux: the core. The cathode of the magnetic diode 6 is connected to the end of the release winding, and the cathode of the magnetic diode 5 is connected to the end of the actuation winding. The anodes of both magnetodiodes are connected to a positive source of control signals.

The device works as follows.

In the initial state, the device core is demagnetized, the windings are two-point, and the contacts of the load wedge are open. The first pulse from the source of the control signal comes through the magnetic diode 5, since its direct resistance is much less. above the resistance of the magnetodiode 6, in the winding 2 of the operation. This causes the magnetisation of the core of the device and the operation of its reed switch. In this case, the magnetic flux of the core, acting on both magnetodiodes, causes a sharp increase in the forward resistance

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the magnet diode 5 and the reduction of the direct resistance of the magneto diode 6. The next pulse is fed through the magnet diode 6 into the winding 3 of the release. The heart is demagnetized. The reed switch contacts release and open the load, and the forward resistances of the magnetic diodes 5 and 6 take on their original values. Then the cycle of operation is repeated.

The effectiveness of the invention is

in that the use of magnetometers allows it to exclude the reed switch from the winding control circuit, replace it with contactless elements,

which in turn increases the reliability of the device.

Claims (2)

1.Denisov, A.G., and others. Ferrides. M, Informelectro, 1972. 2. USSR author's certificate number 480132, class, H 01 And 51/27, 1972 (prototype). tfULJL one Load