Question

Q1/ATV antenna is to be controlled by a 4-phase stepper motor

with a step 5 degrees and reduction gearbox of 1:50. The stepper motor is controlled

using Arduino UNO and must scan angular displacement starting from (10) degrees and

ending at (170) degrees and repeat, in order to search active working TV-channels.

Sketch the controlling cct. and write the computer program that drives the interfacing

cct

Q2/Say WHY?:

1-Measuring temperature using thermistor needs power supply.

2-7410 and 7404 1Cs can not be connected to computer bus..

3-The SDRAM is faster than DRAM

Q3/Given the arays za, zb, zc, zd and ze in which values of impedances for

shown circuit are saved.. Given also the array [nz] of (5) elements in which number of

elements of array za,zb, ze, zd and ze are saved. Write a MATLAB program to find zeq

as seen from AB.

IQ2] Given the arrays za, zb, ze, zd and ze in which values of impedances for shown circuit are saved.. Given also the array (nz] of (5) elements in which number of elements of array za zb, zc, zd and ze are saved. Write a MATLAB program to find zeq as seen from AB A- no (1:5) ; (lon) Zen Beat ZT-217.// Zbz zu B

The topics here are, the first question Arduino and also the second question Micro Processor and the third question Matlab, I want a solution in half an hour or an hour

Answer 1

3.

clear;
clc;
close all;
nz = [5 5 5 5 5];
za = [100 100 100 100 100];
zb = [100 200 200 220 400];
zc = [100 500 200 220 400];
zd = [100 400 200 220 400];
ze = [100 100 300 220 400];
Za = za(1);
for i = 2:nz(1)
    Za = Za*za(i)/(Za+za(i));
end
Zb = zb(1);
for i = 2:nz(2)
    Zb = Zb*zb(i)/(Zb+zb(i));
end
Zc = zc(1);
for i = 2:nz(3)
    Zc = Zc*zc(i)/(Zc+zc(i));
end
Zd = zd(1);
for i = 2:nz(4)
    Zd = Zd*zd(i)/(Zd+zd(i));
end
Ze = ze(1);
for i = 2:nz(5)
    Ze = Ze*ze(i)/(Ze+ze(i));
end
E = 1;
syms v1 v2;
eqn1 = (v1-E)/Zd + v1/Zc + (v1-v2)/Ze == 0;
eqn2 = (v2-E)/Za + v2/Zb + (v2-v1)/Ze == 0;
[v1,v2] = solve([eqn1 eqn2]);
I1 = (E-v1)/Zd + (E-v2)/Za;
Rab = E/I1;
fprintf("Equivalent Resistance between a and b = %f ohms \n",Rab);