SU702424A1 - Relay - Google Patents

Description

I

The invention relates to the field of automation and measuring technology and can be used in the design of relays on reed switches. - The RES-55 relay is known, which contains a switching reed switch, whose moving contact core forms an open contact pair with one of the fixed contact cores, and a closing contact pair with the other fixed contact HbJM core, and a control coil.

A disadvantage of the known relay is the absence of a reed switch actuating element.

Devices are known for monitoring the contact closure of a relay using a parallel, percussion excitation circuit. This circuit is excited by the bounce signal of the reed switch contacts and contains capacitors, transformers, additional phase-shifting circuits and temporary comparators. A disadvantage of the known control devices is the distortion of the communica- tion. signal due to the connection of the measuring circuit and the control circuit, a large number of additional control elements and control of the fact of chatter and not the closing or opening of the reed switch.

The aim of the invention is to provide a triggering control, without distorting the switched signals.

For this relay with a switching reed switch, it is equipped with a toroidal transformer located at the output of one of the contact cores, and this pin is electrically connected to the output of another contact core connected to it.

FIG. 1 shows a measuring relay; in fig. 2 - Transformer installation unit.

The relay contains a switching reed switch 1, which is placed inside the thermo-leveling screen 2, which is vice-filled tube of non-magnetic material with high thermal conductivity, for example, copper or brass, closed on one side. The terminals of the contact cores 3 and 4 are attached to the metallized surface of the electrically insulating plate 5 with high thermal conductivity, for example, from beryl oxide or aluminum. The output of the contact core 6 is connected with a jumper to the opposite surface of the plate 5. Transformer 7 on the toroidal core with an input winding 8 and output winding 9 is placed at the output of the contact core 3. Contact cores 3 and 4 form a single turn short-circuited winding; transformer. The relay works as follows. Under the action of a magnetic field created by the current passing through the control coil 10, the contact cores 3. And 4 are opened, and the cores 4,6 are closed. After applying voltage to the coil 10 of the control, over time, it is necessary to calm the cores into the input winding 8 of the transformer, a pulse of the polling current is applied. If the reed switch is operated by the cores 3 and 4 open, a voltage pulse is transmitted to the output winding 9. If the reed switch does not work, then in the transformer there is a short-circuited turn formed by contact cores 3 and 4. In this case, the amplitude of the output pulse will be less.

/ 7 4 The presence or absence of a pulse with a amplitude in the output winding 9 is a sign of a reed switch triggering or failure. Introduction to the design of the relay is a simple and reliable control element that allows the proposed design to be used in highly reliable as well as in high-precision systems for software-controlled devices for specifying experimental diagrams, as well as for devices for collecting and issuing information. Formula ia of the invention A relay comprising a switching reed switch, a movable contact core: which forms an open contact pair with one of the fixed contact cores, and a control contact with another fixed contact core, and with a control coil, characterized in that relay without distortion of the switched signal, it is equipped with a toroidal transformer placed on the output of one of the contact cores, and the specified output is electrically connected ene terminal with one contact is in contact with it core. Sources of information taken into account in the examination 1.Khazarov KI, Relay with magnetic contacts, M., Energie, 1971 ... 2. USSR author's certificate number 520705, cl. H 03, K 17/02, 1973. 10