SU1721655A1 - High-voltage snap-action relay - Google Patents

Abstract

This invention relates to electrical engineering, in particular to electrical relays. The purpose of the invention is to increase the reliability of the relay. In the off position, the contacts of the reed switch 39 are closed. A negative blocking potential is applied to the base circuits of the transistors 20-25, whereby the transistors 20-25 and 1-6 are locked. When the relay is turned on, the contacts of the reed switch 39 are opened; On the base circuits of transistors 20-25, a positive potential becomes dominant and transistors 20-25 and 1-6 open, which causes the relay to turn on. When the contacts of the reed switch 39 are closed, the relay is switched off. An increase in the reliability of a relay is achieved by using a low voltage coil in it. 1 il.

Description

The invention relates to electrical engineering, specifically to an electrical relay.

The aim of the invention is to increase the reliability of the relay.

The drawing shows a circuit diagram of a relay.

The high-voltage high-speed relay contains a chain of series-connected transistors 1-6, in the base circuits of which diodes 7-12 and resistors 13-18 are connected in series, with their free ends connected to a common point to which a bias resistor 19 of the base circuit is connected with one terminal , with the other output it is connected to the emitter of transistor 6, as well as an additional chain of series-connected transistors 20-25. in the base circuits of which diodes 26-31 and resistors -32-37 are included, while their free leads are combined into a common point, to which the bias resistor 38 of the base circuit is connected with one of its terminals, and with its other output it is connected to the emitter of the transistor

6. Parallel to the resistor 38, a disconnecting high-voltage reed switch 39 is connected, and a high-resistance resistor 40 is connected between the common point of the resistors 32-37 and the collector of the transistor 20. The collector of the transistor 20 is connected to. the collector of transistor 1 and the emitter of transistor 25 with a common point of resistors 13-18.

The relay operates as follows.

In the absence of a low-voltage signal on the excitation winding of the reed switch 39 through its opening contacts, the base circuit of transistors 20-25 is supplied with a negative, blocking potential, and their collector-emitter junctions are in a locked state, preventing transistors b6, which are also supported by a negative, from opening up potential through the bias resistor 19 • of the base circuit. In this case, there is a leak, the value of which is determined by the resistance of the resistor 40. When a low-voltage signal is supplied to the field coil of the reed switch 39, its contacts open, the positive potential prevails on the base transistor circuits 20-25, as a result of which they open, thus supplying a positive potential to the base circuits of transistors 1-6, as a result of which the latter open (the relay closes). When the signal is removed from the field coil of the reed switch 39, the relay returns to its initial (open) state.

In the proposed relay, increased reliability is achieved through the use of a low-voltage reed switch.

Claims (1)

Claim A high-voltage high-speed relay containing a terminal for connecting a power source and a terminal for connecting a load, a reed switch, two groups of transistors, two groups of resistors, a group of diodes and an additional resistor, each of these groups of transistors and resistors and a group of diodes contains the same number of elements, the emitter the collector junctions of the transistors of the first group of transistors are connected in series circuit, one output of which is connected to the output for connecting the positive pole of the power source, a different terminal of the indicated chain of series-connected emitter-collector junctions of transistors of the first group of transistors is connected to a terminal for connecting the load, each of these resistors of the first group of resistors bypasses the emitter-collector junction of the corresponding transistor of the first group of transistors, the first terminal of each of the resistors of the second group of resistors is connected to the anode of the corresponding diode of the group of diodes, the cathode of each of the diodes of the group of diodes is connected to the base of the corresponding transistor a swarm of transistors, the second terminals of the resistors of the second group of resistors are connected to a common point and connected through the specified additional resistor to a terminal for connecting the load, characterized in that, in order to increase the reliability of the relay, a second group of diodes, the third and fourth are introduced into it a group of resistors, a second and third additional resistors, and a reed switch with a disconnecting contact is used as the specified reed switch, the number of emitters of the second group of diodes, the third and fourth group of resistors corresponds to of transistors in the first group of transistors, the emitter-collector junctions of the transistors of the second group are connected in a series circuit, one output of which is connected to the terminal for connecting the positive pole of the power source, the second terminal of the indicated chain from series-connected emitter-collector junctions of the second group of transistors is connected to the first output the second additional resistor, the second terminal of which is connected to the terminal for connecting the load, the zitter-collector junction of each of the transistors The ditch of the second group of transistors is shunted by the corresponding resistor of the third group of resistors, the first output of each of the resistors of the fourth group of resistors. connected to the anode of the corresponding diode of the second group of diodes, the cathode of each of the 5 indicated diodes of the second group of diodes is connected to the base of the corresponding transistor of the first group of transistors, the second terminals of the resistors of the fourth group of resistors are connected to a common point and connected to the first terminal of the second additional resistor, a common connection point of the second the findings of the resistors of the second group of resistors through the specified third additional resistor is connected to the output for connecting the positive pole of the power source, to ntakty said reed switch connected in parallel with the first additional rezi10 the blind. Compiled by A. Kolyadin Editor I. Derbak Tehred M. Morgnetal Corrector O. Ziple i ''. ............... ifc £ Order 956 Circulation Subscription VNIIIPI of the State Committee for Inventions and Discoveries under the State Committee for Science and Technology of the USSR 113035, Moscow, Zh-35, Raushskaya nab., 4/5 Production and Publishing Plant Patent, Uzhgorod, 101 Gagarin St.