SU449353A1 - Optoelectronic device for the construction of electrical signals in the fraction - Google Patents

Description

(54) 011TOYAECTRONIC DEVICE FOR REVERSE ACID GRIPPERS IN FRIEND C1

The invention relates to the automation and computation of technology.

Optoelectronic devices for the ejection of an ECDC signal to a fractional degree are known, containing a light source optically coupled to photoresistance included in the corresponding circuit diagrams and connected to the output of a differential amplifier whose inputs are connected to the input diagonal of the first bridge circuit. One of the inputs of the differential amplifier is connected through a resistor to the first input source, the second input source is connected to the diagonal of the last bridge circuit.

The proposed device differs from the known ones in that the diagonals of each bridge circuit in it are connected to the corresponding diagonal of the previous and last bridge circuits and to the corresponding output of the device. This made it possible to expand the application and simplify the device.

Diagram of the device shown in the drawing

The device contains a light source I, photoresistors 2-5, resistors 6-18 and a differential amplifier 19;

The device works as follows.

0

When the input voltages are 1Gx and Uy, T / MI-J-VM voltages are generated at the outputs of the bridge connections.

M, / i / R2Uy,

6

VM2 K2 l Yae l / AJ,

Ms ZL / ts1Gm2,

m KtsLYa51 / Me

 % change in resistance values of photoresistors 2,3,4,5, respectively;

Wi-f Ktf - constructive permanent bridge circuits.

Joint solution of equations

3449353i

(I) for the output signal of bw-pn bridge

the bridge circuit C / M4.- dee circuits at the outputs of the device, you can

, “2МЧИМ“ eLKCHD “5Л, receive (aa)

/ 7 reads the on input of the Ux with the output natr of the bridge of the UMA bridge circuit and takes into account the presence. the deep negative feedback formed by the source of the light source I, the photoresistor 5, the large enough coefficient of the differential amplifier and the 19, it can be assumed that the illumination of the photoresistor 2 is established, that the ratio

1 / x / iK2 / V3W "4R27 / 34R4L 5 |

Assumed resistive changes of resistors 2,3,4,5 with the same illumination equal (or some constant proaorsonal)

ARg yKts AR5 LC

what can be realized with high accuracy while producing them according to planar technology, from the ratio v3) and (4) we will teach:

t / x K K2K3K4 or

- (- mdag-f),

and for device output voltages

 fMrwr

. ft, kff, ji 1 Um - a. КзтгЛ If А

- (to, and, n, and,)

-L

P1 Ke- "Ki

(K-JKg-t Hi..i

Those. The device reproduces the functional layers. for #simos, which are products of doobny power fusso input signals VxHifu

In this case, the output signals of the device do not depend on the nonlinear properties of the optocoupler pair — the light source of the photoresistor. The scheme is thermostable, since at approximately equal changes of Hi under the influence of temperature, the coefficient

l 1 Kjg «« «KL

one

 I, h.

HiKz / Cf ... )

 1IOBRBTENSH

An optoelectronic device for raising electrical signals to a fractional power, containing an optical source of light

associated with photoresistors, including scales in the corresponding bridge circuits and connected to the output of a differential amplifier, whose inputs are connected to the input diagonal of the first bridge circuit, one of the inputs of the Differential amplifier being connected through a resistor to the first input source, the second source

the input signal is connected to one diagonal / 1 of the last bridge sheche, in order to expand the areas of | |

in it, the diagonals of each bridge circuit are connected to the corresponding diagonal of the previous and subsequent bridge circuits and to the corresponding output of the device.

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