A buck converter is operated from the rectified 230 V ac mains, such that the converter de input voltage
IS
V8 = 325 v ± 20%
A control circuit automatically adjusts the converter duty cycleD, to maintain a constant de output voltage
of V = 240 V de. The de load current I can vary over a 10: 1 range:
lOA::;J:s;lA
The MOSFET has an on-resistance ofO.S Q. The diode conduction loss can be modeled by a 0.7 V
source in series with a 0.2 Q resistor. All other losses can be neglected.
(a) Derive an equivalent circuit that models the converter input and output ports, as well as the loss
elements described above.
(b) Given the range of variation of V8 and I described above, over what range will the duty cycle
vary?
(c) At what operating point (i.e., at what value of V8 and I) is the converter power loss the largest?
What is the value of the efficiency at this operating point?

For buck and boost type converter, compare the impact of load resistance when the

converter goes from continuous conduction mode (CCM) to discontinuous conduction mode

(DCM) on (give reasons to validate your answer)

a. Voltage Gain

b. Output voltage ripple

c.   Inductor current (nature of waveform)

Write a program By using ardino and h-bridg and dc motor
No sensoer.
VICHAEL start from A move some distance till point B
than turn 90 degree than move some distance till C
than turn 90 degree and move Tell point D
than turn 90 degree and move till start point which is A
As square moving (, starting from A and back to A)

Matlab

Explain the codes below

% Jake.m

% Generate a frequency selective fading

function [r, iout, qout] = Jake(idata, qdata, nsamp, fs, fc, NN, N1_arr, velocity, counter_arr, delay_time, attn, flat)

%****************************** variables *******************************

% idata input Ich data

% qdata input Qch data

% nsamp Number of samples to be simulated

% fs Sampling frequency (Hz)

% fc Carrier Frequency (Hz)

% NN Number of paths

% N1 Number of waves in order to generate fading

% velocity Mobile speed in Km/h

% counter Fading counter

% delay_time Delay for each fading path (ns)

% attn Attenuation level for different fading paths (dB)

% flat flat fading or not

% r Envelope of fading channel complex impulse response

% iout output Ich data

% qout output Qch data

%************************************************************************

v = velocity./3.6; % m/s

c = 3e8;

fm = fc*v/c; % Maximum doppler frequency (Hz)

delay_samp = round(delay_time.*fs.*1e-9); % normalized delay time in number of samples

total_attn = sum(10.^(-1.0.*attn./10.0)); % normalize the power

tstp = 1/fs; % minimum time resolution

iout = zeros(1,nsamp);

qout = zeros(1,nsamp);

r = zeros(1,nsamp);

theta = zeros(1,nsamp);

for i=1:NN

atts = 10.^(-0.05.*attn(i)); % attenuation for current path

[itmp, qtmp] = delay(idata, qdata, nsamp, delay_samp(i));

[r_single, iout_single, qout_single] = fade2(itmp, qtmp, nsamp, tstp, fm, N1_arr(i), counter_arr(i), flat);

counter_arr = counter_arr+200; % update counter

iout = iout + atts.*iout_single./sqrt(total_attn);

qout = qout + atts.*qout_single./sqrt(total_attn);

end

r = sqrt(iout.^2+qout.^2);

Write a MATLAB function named numberWords() that takes a whole number as an argument and returns a string containing the number word for the whole numbers 0 - 999.

For example:  numberWords(234) would return 'two hundred thirty-four'

If the input value is not a whole number between 0 - 999 then the function should return a string equivalent to 'ERROR'.

c) Define the measurement system specifications to meet the above application requirements

d) Develop a feasible design: draw the measurement system block diagram and describe the function of all needed subsystems

matlab code to calculate cost (min cost) of generators for 30 bus IEEE.

An example of a PIC C program code for line following and obstacle avoiding robot? For it move forward and avoid an obstacle?

Design and simulate a regulated power supply using a bridge rectifier, capacitors, and zener diode ( no integrated circuit). The source voltage is 110 plus or minus 10 Vrms, 60 Hz frequency. The output voltage is as follows (plus or minus 5%) : 4.5 V and 12 V

It has to be done on a breadboard. The rating of the adapter will be 12W and 5% regulation. To protect the circuit include a surge protection and fuse in the circuit design. The total cost of the components of the design should be less than $10. A total number of the elements should be less than 12 for reducing environmental impact. Test it on Multisim and breadboard. Please LIST each item that you used on the breadboard test exactly. I NEED YOU TO PERFORM IT ON A BREADBOARD as well as ON MULTISIM. SHOW the multilsim picture. SHOW ALL CALCULATIIONS NEATLY! DO NOT WRITE IN PEN OR CURSIVE! THANK YOU!

Vocabulary: write the definition of the following words capital letters and give a synonymous for each word, then use the each word in a sentence. (TIRADE, WIZENED, PULCHRITUDINOUS, DISSEMINATE, CLEAVE)

Draw the block diagram of a phase locked loop and discuss the operating principle of it

   Explain how P and N doping can be used to create a device that will only allow a flow of current in one direction. Include in your answer a description the movement of charge carriers when a forward or reverse bias are applied across the device.

Question 2: sensor Char, medaling (17 pts)

Q2: Experimental data’s for relative temperature sensors

a) Compute the sensor sensitivity using the data off the table 1?

b) Study the sensor linearity based on the data of the table 1?

c) Discuss the sensor precision based on the data of table 2?

d) Use the data of table 2 to explain the different between random and systematic errors?  

For a general second order control system. On a complex plane graph, with real and imaginary axes, show the region where the roots of a stable second order control system must lie in order to satisfy the following performance conditions:

• Settling time between 0.4 and 0.8 seconds
• Peak overshoot below 5%
• Frequency of oscillation below 8 rad/sec                                                       

** My system is RTD

Question 4: System Installation and Testing

Describe how you would install your system to minimize environmental effects on the sensor operation

Discuss the main error sources (not types: system & random) that would affect your system measurement accuracy.

Describe how you would test and calibrate the measurement system designed. Show details for one sensor to verify operation according to specifications