SU1410124A1 - Apparatus for preburning sealed-contact reed relays - Google Patents

Abstract

The invention relates to electrical engineering and can be used in the manufacture of all types of reed switches. The purpose of the invention is to expand the functionality. The device allows the accelerated training of both the opening and closing contacts of reed switches with the exception of sharply directed erosion on the contact parts and ensuring high quality of the contact surface. The trained reed switch is placed inside three concentrically located magnetizing coils, of which the first is directly connected to the AC source, and the other two are connected via the normally open and normally closed contacts of the reed switch, respectively. The direction of the magnetic fields of the coils is such that the reed switch operates in self-oscillation mode with a high frequency, interrupting the passage of alternating current through its contacts. I il.

Description

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I LioopcTeiine relates to electrical engineering and M (/ KfT to be used in the manufacture of the number of 6 types of 1 ekronov.

He.ib and oorsti - an extension of the functions of the device.

ll; i tsrgezhe is a diagram of the device. number of training reed switches.

The scheme consists of the first 1, second 2, third 3 magnetizing coils, trained reed switch 4.

The first is magnetized and the coil 7 is connected directly to a source of sinusoidal voltage, a third of the magnetizing coil 3 is connected to the same source via make contacts (N. 3) of the trained reed switch, the direction of the fields of the first and third coils is the same, the second magnetizing coil 2 is connected to the source of sinusoidal voltages through the opening contacts of the trained reed switch, and the magnetic field created by it is directed oppositely to the fields of the first and third coils, and all the cells are the same, concentric - but one another, and the trained reed switch is inserted inside them.

The device works as follows.

When an alternating current is applied to the coil 1 and through the closing contacts of the reed switch in: a catup 3, a magnetic field is created by the voltage I | H | --N3. When its value I reaches the field of operation of the Norto reed switch, the closing contacts of the reed switch open when coil 2 is connected to the current source. Since the magnetic field of the second coil is opposite to the field of the first coil, the resulting magnetic field of HI-H2 becomes less than the response field of the reed switch Hsr and the reed switch contacts return to the original position, i.e., the opening contacts open and the closing contacts close, which leads to the condition H | - | -H3 Hc1) and causes the contact to be transferred again, etc.

For one positive or negative up-sinusoidal voltage from the source over the .-. From the source, one can obtain a multitude of breaks and short-circuits of the reed switch contacts and, accordingly, current pulses through nei o. The frequency of self-oscillations can be high, which speeds up the reed switch training. Accelerated reversible transfer of a substance from one electrode to another, compaction of this substance, excluding the formation of a peak and a crater on the contacting surfaces, improves the quality of contacts and their wear resistance. Simultaneous training of make and break contacts allows one to train any type of reed switches.

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Claims (1)

Invention Formula A device for training reed switches containing a first magnetizing coil for connecting to an AC source, a second magnetizing coil for connecting to the same AC source in series with a disconnect, contacts of the trained reed switch, and the polarity of the second magnetizing coil is such that the magnetic field created by it is directed against the field created by the first magnetizing coil, characterized in that, in order to expand the function It is equipped with a third magnetizing coil designed to connect to the same AC source in series with the closing contacts of the reed switch, and the polarity of the third magnetizing coil connection is such that the magnetic field created by it coincides with the field of the first magnetizing coil.