SU1515346A1 - Optronic gyrator - Google Patents

Abstract

The invention relates to electronics and can be used in frequency selection devices to simulate an ungrounded inductance. The purpose of the invention is to increase the conversion ratio while simplifying the gyrator. To achieve the goal, a gyratory containing a light emitter 1, three photodetectors 2-4, rc 14 dc, power sources 15-18, photoreceivers 6-9 and four light-modulating elements 10-13 are inserted. When using diode photodetectors, the coefficient value is achieved. converting to one hundred thousand hours H / μF. Reducing the number of DC generators and realizing the device on photodiodes with low operating currents ensures a reduction in power consumption and control power, and simplifies the device. 1 il.

Description

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The invention relates to radio electronics and can be used in frequency selection devices to simulate a ground-inductance.

The purpose of the invention is to increase the conversion ratio while simplifying an optoelectronic gyrator.

The drawing shows a circuit diagram of an optoelectronic gyrator,

Optoelectronic gyrator contains light emitter 1, first 2, second 3, third 4, fourth 5, fifth 6, sixth 7, seventh 8 and eighth 9 photo receivers, first 10, second 11, third 12 and quarter 13 light-modulating elements, generator 14 direct current, power supplies 15-18, input terminals 19 and 20, and output 21 and 22.

Optoelectronic gyrator works as follows

In the initial state, the light emitter 1 is transmitted through a permanently controlled light-modulating element having a high differential resistance rd ,, (approximately) to the reverse-biased photodetectors (with a differential resistance of 5 ohm), upon arrival at the input terminals. PL of the input voltage (2 + part of this voltage, at the fourth (third) light-modulating element 13 (12), which leads to a change in its transmittance and, consequently, to modulation of the light flux ka, incident on the first, seventh (and third, eighth) photodetectors 5 and 8 (4 and 9). At the same time, determining the fourth one) 1m, seventh, third and BocbNibiM photodetector 5,8,4,9 output current at the output I d ,,,, directly proportional to the voltage on the light-modulating element and the double slope S of the photodetector at the input of the light-modulating element

S and

in

1 +

2 g

Similarly, the (2 +) part of the output voltage of the output terminals is applied to the nepBONry (second

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rum) light-modulating element 10 (11) and controls the luminous flux from the light emitter 1 to the first, sixth photodetectors 2 and 7 (second, fifth 5 and 6). In the gyrator with the considered structure of electrical and optical connections, the input current is 1., determined

excretion

0 -S

in

1 + g ./ (2)

R

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The above equations describe the operation of two voltage-controlled

current sources, the counter-parallel connection of which is realized by an optoelectronic gyrator. When connected to the output terminals of the capacitor C, the input terminals are simulated

balanced inductance L with a conversion factor

L L + ./(2 GEA) S S

The optoelectronic gyrator circuit is reversible, i.e. input and output terminals are interchangeable.

When the gyrator is executed, for example, on liquid-crystal light-modulating elements and transistor photodetectors, the conversion factor of the units Hn / μF is reached (as in the case of the known gyrator), and using diode photodetectors up to one hundred thousand Hn / μF. Reducing the number of DC generators and realizing a gyrator on photodiodes with low operating currents along with the transition

For potentially controllable light-modulating elements, the power consumption and control power are reduced and the gyratory is simplified.

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Claims (1)

Invention Formula An optoelectronic controller containing a light emitter, a first, second, third and a quarter photodetector, a DC generator, the anode of the light emitter connected to the bus of the first power source, the first lead of the DC generator, the anodes of the first and second. the photodetectors are connected to the bus of the second power source, and their cathodes are connected respectively to the first. the third and fourth photodetectors are connected to the third power supply busbar, and their anodes are connected to the first and second output terminals, respectively, characterized in that, in order to increase the conversion rate while simplifying the generator, the fifth, sixth, seventh and eighth photodetectors, the first, second, third and fourth light-modulating elements, and the second step of the DC generator is connected to the cathode of the light emitter, while the cathode of the fifth and sixth topriemnikov coupled to bus 0 five the first power source, and their anodes are connected respectively to the first and second input terminals, the anodes of the seventh and eighth photodetectors are connected to the busbar of the fourth power source, and their cathodes are connected respectively to the first and second output terminals, the first, second, third and fourth light-modulating the elements are located between the light emitter and, respectively, the first and sixth, second and fifth, third and eighth, fourth and seventh., photo-receivers and are connected in parallel to the third, seventh, fifth, respectively the first photodetector.