SU1251315A1 - Optronic relay - Google Patents

Abstract

The invention relates to a pulse technique. It can be used in optoelectronic switches, switches, devices for converting and storing Information. The purpose of the invention is the increase in functionality, achieved by using the energy of the source of control signals to power the components of the device and to form the relay transfer characteristic of the device. For this, Zener diode 11 and the fourth 12 and fifth 13 resistors are introduced into the device. In addition, the device contains a LED 1, a photodiode. 2, outputs 3 and 4 devices, transistors 5 and 6, resistors 7, 8 and 9, inputs 10 and 14 devices. The device is practically analogous to an electromagnetic relay and has a wide functionality. 1 il. (O (L 2 CH el: with ate

Description

The invention relates to an impulse technique and can be used in spin-electron switching, switches, converters, and information storage devices.

The purpose of the invention is to expand the functional possibilities by using the energy of the source of control signals to power the components of the device and to form a relay transfer characteristic of the device.

The drawing shows a circuit diagram of the device.

An optoelectronic relay contains a light-emitting diode 1; optically connected to a photodiode 2 5 which is connected to the outputs 3 and 4 of the device, the first 5, the second 6 transistors, the first 7, the second 8., the third 9 resistors. The collector of the transistor 5 is connected to the first output of the resistor 7, the base of the transistor 5 through the resistor 8 is connected to the first input 10 of the device 5 the base PI of the transistor 6 of the transistor 6 is connected respectively to the first output of the resistor 9 by the emitter of the transistor 5.

E device introduced zener diodes 11, fourth 12 and fifth 13 resistors. The cathode of the Zener diode i 1 is connected to the anode of the LED I and the second input 14 of the device, the anode of the Zener diode 1 I is connected to the second output of resistor 9, the cathode of the LED 1 through resistor 12 is connected to the collector of the transistor bis by the perisode of resistor 13, the second output of which is connected to the base of the transistor 5, the emitters of the transistors 5 and 6 are connected to the first input of the 10 device.

The device works as follows.

In static mode, the device does not receive electrical energy; so the led

Toazzistory 5 and 6, the Zener diode 11 is turned off, and the unlit photodiode 2 does not generate a photocurrent. To switch the device on between inputs 14 and 10, a positive potential difference is generated from the source of control signals.

If the input voltage is low, then the transistors 5 and 6 are still off, and through the LED 1 through the circuit with resistors 12.3 and 8 prote)

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Kata quite a small electric current. By i-tepe, if the input voltage goes up, the potential difference is. relay 8 reaches the turn-on threshold of transistor 5; this transistor is unlocked, and as the input voltage rises further, it goes into on-voltage mode.

; A new increase in the input voltage leads to breakdown of Zener diode II, the current in the circuit of resistors 7 and 9 increases sharply, which leads to unlocking of the transistor 6 k with a real increase in the conduction current of the LED 1. In this mode, the LED 1 emits an intensity and emits - Г1: A common photodiode 2 detects the input of a photocurrent.

When the transistor 6 is unlocked, transistor 5 goes out of the sat-, p mode, the device starts to de-activate the feedback 1; about the circuit containing com- tons, 5 and 7, which speeds up the transition and the transistors. As a result, the transistor. 3 is locked, and the transistor 6 (the Rixie pyeTCJf 3 mode is on-line. The conduction current of the LED on this stage is limited by resistor 12.

When the input voltage decreases, the zener diode 11 closes 5. A positive feedback occurs in the device, which accelerates the switching of the transistors. As a result, the transistor 6 is locked, the transistor 1 is locked to the saturation state, and the level of conduction current of the ozone diode decreases sharply. As soon as the voltage is removed, transistor 1 is turned off.

Since in the device at a definite; .1 slenpor1 stage, a positive feedback operates; the transfer characteristic of the device — the dependence of the output photocurrent on the input voltage — has a pronounced hysteresis (t, e, is relay.

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The electrical supply of the components of the device is achieved by using the energy of the source of control signals (without the introduction of additional power sources and direct current voltage sources), which prevents the operation of the device.

The device is quite a full-fledged analog of the electromagnetic relay and, thus, has

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Claims (1)

Formula. An optoelectronic relay containing j LED optically connected to the output photodiode, the first and second transistors, the first, second and third resistors, the collector of the first transistor connected to the first output of the first resistor, the base of the first transistor through the second resistor connected to the first input of the device, the base and the second transistor zmitter are connected respectively to the first stroke of the third resistor and the first transistor eistunter, differing 154 Now that, in order to expand its functionality, a stabilizer, a fourth and five resistors are inserted into it, the cathode of the Zener diode is connected to the anode of the LED and to the second input of the device, the anode of the Zener diode is connected to the second output of the third resistor, the cathode of the LED through the fourth the resistor is connected to the collector of the second transistor and to the first output of the fifth resistor, the second output of which is connected to the base of the first transistor, the second output of the first resistor is connected to the base of the second transistor, and the emitters are transistor They are connected to the first input of the device.