SU1424032A1 - Code-controlled conductivity unit - Google Patents

Abstract

The invention relates to the field of automation, computer technology and information measuring equipment and can be used, in particular, in analog-digital computer Hbix machines, digital bridges, code-controlled conduction measures, etc. The aim of the invention is to expand the field of application of the block due to the possibility of separate adjustment of the two components of equivalent conductivity. The unit has external information outputs 1 and 2 and contains a scale amplifier 3, the first 4 and second 5 multiplying digital-to-analog converters, the first 6 and second 7 current-generating bipolar circuits, the first 8 and second 9 encoders. The goal has been achieved by introducing a second multiplying digital-analog converter, a second conduction element, a second encoder, and a scaling amplifier into the code-controlled conductance unit. 1 il. about

Description

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The invention relates to automation, computing and measurement technology and can be used, in particular, in analog-digital computing, printing machines, digital bridges, code-controlled conduction measures, etc.

The purpose of the invention is to expand the range of application of the block, ensuring that the two components of equivalent conductivity can be adjusted pas-jg.

The drawing shows the block diagram.

The unit has external information outputs 1 and 2 and contains a scale 15 amplifier 3, first 4 and second 5 multiplying digital-to-analog converters (UTsAP), the first 6 and second 7 current-generating two-pole and the first 8 and second 9 encoders, connected according to the 20 diagram.

The block works in the following way.

According to TSIFROVB1M, the control inputs Yu and 11 are given the codes n and P. These codes are converted by encoders 8 and 9, which corresponds to the new values of the numerical equivalents n and P. The codes obtained at the outputs of the encoders 8 and 9 control the transmission coefficients ATsAL i and 5 by voltage:

to,

(one)

to.

(2)

voltage on the output of the scale amplifier 3;

UCAP 4 and 5 sensational voltages;

bit size (it is assumed that binary UCAPs are used);

п ,, п - numerical (Tangent) equivalents of input codes UCAP 4 and 5.

Having learned that the transfer coefficient of amplifier 3 is equal to K, and neglecting its input currents, find the input current of the block flowing through pins 1 and 2:

1, u ,, (,) Y, - and, (1 - Y,) Y ,,

where Y and Y-, are the conductivity of the current-creating two-port (; G 6 And 7.

Equivalent block conductivity between pins 1 and 2

 ig h)

Substitution (O and (2) in (3) receive

nt

P

Y, (i-Kjj- i:) Y, () Y,. (M

The presence of two independent terms in (-i) allows one to realize code-controlled complex conductivity with separate adjustment of the active and reactive components. For example, by including a resistor R as Y, and a capacitor C as Y:

Y, (1-K) R4j (1-K, fl-) G.C, (5)

where w is the angular frequency at which

conductivity is determined. Replacing the capacitor on I1duktivnost-L, get

, P,

P2

one

Y, (1-K) R -j () -. (6)

Thus, the unit allows modeling the conductivity of an RC or RL circuit.

If the two-terminal 6 and 7 are chosen so that the value of one of them is significantly larger than the other, then with one UCAP one can set large values of conductivity, and with the help of the other UCAP - small increments of high-resolution conductivity.

The use of encoders B and 9 makes it possible to change the nature of the dependence of the conductance on the 1-word codes, for example, to obtain logarithmic, exponential and other types of functions Y, f (n, n).

Claims (1)

Invention Formula 0 five The code-controlled conduction block containing the first multiplying digital-to-analog converter, the first encoder and the first current-generating two-port, the first terminal of which is connected to the first information output of the block connected to the zero information potential bus, is connected to the digital input of the first multiplying digital-analog converter and its input is the first digital control input of the block. about . I and h and y with the fact that, with a TG./PG.I of the application area, 1 GPRTT separate adjustment of two "tipllyuchkh of equivalent conductivity of the unit, a scale Hihi amplifier, the second multiplying digit g about; 1-tax converter, the second Tikozg1 delivering two-terminal and the second) iroii, the output of which is connected ;; digital input of the second multiplying digital-to-analog converter,, 1 input is in the org-1 front office input of the block, ai.-jugo .. the inputs of the first and second multiplying digital-to-analog converters are combined and connected to the output of a large-scale amplifier, whose input is connected to the first information output of the unit, the second sign of the first current two-pole device is connected to the output of the first multiplying digital-analog converter, and the second current interface, and the second two-terminal, between the perl i111b () with a rotative block output and the output of the second multiplying digital analogue ouoi O converter.