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  1. evol_w10lv

    Half-wave Rectifier with Smoothing Capacitor

    Yes, I understand, what is needed, but I don't know, how to do it. Have I need to include one more for loop in programm code? I think, that I won't finish this task.
  2. evol_w10lv

    Half-wave Rectifier with Smoothing Capacitor

    I made the code for V(out) without capacitor. R=1e3; i0=1e-6; F=50 T=1/F C=50e-6; fi=26e-3; h=T*0.01; t=0:0.01*T:10*T; for i=1:length(t) %t(i)=(i-1)*inc; e(i)=310*sin(2*pi*50*t(i)); if e(i)>=0 Uiz1(i)=e(i) else Uiz1(i)=0; end end figure(2)...
  3. evol_w10lv

    Half-wave Rectifier with Smoothing Capacitor

    Actually this task is for computer science not for electronics, but I don't know almost nothing about diodes. On the Internet wasn't very clear information, how V(out) is changing by time. Your information is useful, but.. First off all, to ease up the task, I will try to start with case 2. It...
  4. evol_w10lv

    Half-wave Rectifier with Smoothing Capacitor

    Yes, I guess, that this is the way, how to calculate voltage by time when capacitator is used (file in attachment). Last line shows, how to find next voltige with step +h (+0.0002 s) as V(k+1). As I said, I have to use iterations. And I have got: E(t) = 310*sin(2*pi*50*t) When t1 = 0, then E(1)...
  5. evol_w10lv

    Half-wave Rectifier with Smoothing Capacitor

    Hello! This time I have to graph few graphics using MATLAB. I don't know, whether you use it or not, but problem is that don't understed exactly, how voltage is changing by the time. I have this loop: And outputs I expect: Given: E(t) = 310*sin(2*pi*50*t) time is changing from...
  6. evol_w10lv

    LCR circuit calculations

    Round-off error is not so important, the main thing is understanding, that's why I will use my calculation results to continue the task. I1 through R1, L1, C1: I1 = E/Ztoatl = 180/(21.4*e^(-j66.78°)) = ~8.4*e^(j66.78°) A V23 = I1*Z23 = (8.4*e^(j66.78°)) * (2.16*e^(j77.91°)) =...
  7. evol_w10lv

    LCR circuit calculations

    I have to calculate result of voltmeter and wattmeter. And also have to find effective current in the branches Given: e = 180 V R1 = 8 Ohms C1 = 0.0001 F L1 = 0.0318 H R2 = 4 Ohms L2 = 0.0159 H L3 = 0.0094 H f = 50 Hz Here I started calculations. XL1 = 2*pi*f*L1 =...
  8. evol_w10lv

    LC circuit tasks

    To calculate impedance Z without rv it is Z = sqrt((Xl-Xc)^2)?
  9. evol_w10lv

    Load resistance, dissipated power (AC)

    :) In electronics I believe you more than I believe myself. Thank you for helping me.
  10. evol_w10lv

    Load resistance, dissipated power (AC)

    Actually, I have to calculate dissipated power in the load (Pl), dissipated power in the wires (Pw), total dissipated power (Pt) and voltage in load (Vl). I made my attempt using your suggestions: Il = 100A Iw = Il/5 = 100/5 = 20A Pw = Iw^2 * Rw = 20^2 * 0.6 = 240W I(at start) = Iw/0.2 = 20/0.2...
  11. evol_w10lv

    LC circuit tasks

    Great tutorial. It will help for me not just for this task. :) I used this formula: I calculated 5 values. Yes, it is not enough to get perfect graphic, but here is result: All calculations I did by this algorithm: f1: f0 = ~23993.5 Hz f1 = 0.1f0 = 2399.35 Hz w = 2*pi*f1 = 2*pi*2399.35 =...
  12. evol_w10lv

    Load resistance, dissipated power (AC)

    If we are using ratio, that current of the first transformer should be 20 A And If the current is increased as we can see, I guess, then the voltage in the load is decreased. How I have to use the square of the turns ratio to get Rreflected?
  13. evol_w10lv

    Load resistance, dissipated power (AC)

    Now speaking about the second task. It means that there Ptotal = 12000 W and Pw = 6000 W as in the first task, because in the all three loops are same current I = 100 A? Then between first and second loop Rr = 0.04*Rl, using formula [(1/n)^2 * Rl] and between second and third loop Rr = 25*Rl...
  14. evol_w10lv

    LC circuit tasks

    Yes, I get it why do we need delta delta Y and delta X. XL and XC changes at different frequencies (as you mentioned). It was awkward question. But I still don't really understand, how to get input current. I guess, this is complex impedance Z(L,C,f): But how to get complex U without...
  15. evol_w10lv

    LC circuit tasks

    I have also got LC circuit task. I add table, where are values, which I have to calculate (I guess all denotations/symbols are international): 1.1 We have got parallel LC circuit. Have to calculate frequency f0, ratio of charge Q and total impedance Z(w) in the range (0.1 .. 10)f0...
  16. evol_w10lv

    Load resistance, dissipated power (AC)

    At last I had time to get back this task. I tried first task: Rtotal = V/I = 120/100 = 1.2 Ohms Rl = Rtotal - 2*Rw = 1.2 - 2*0.3 = 0.6 Ohms Vl = I * Rl = 100 * 0.6 = 60 V Ptotal = V^2/Rtotal = 120^2/1.2 = 120000 W Pl = Vl^2/Rl = 60^2/Rl = 60^2/0.6 = 6000 W Vw1 = Vw2 = I * Rw = 100 * 0.3 = 30 V...
  17. evol_w10lv

    Load resistance, dissipated power (AC)

    Hi! I hope that someone will help me to calculate few tasks. 1. We know alternating voltage = 120V, Resistance of wire = 0.3 Omh as we can see in scheme. I have to solve voltage in load resistance, dissipated power in wires and dissipated power in load resistance. 2. The same...
  18. evol_w10lv

    Calculate Current, Power, EMS..

    Thank you very much for helping. Acually task is solved. I calculated power power balance by my selfe. I respect your helpful attitude. :) And if I have other tasks and lack of understanding, I will certainly ask for your help. :)
  19. evol_w10lv

    Calculate Current, Power, EMS..

    Yes, I would like to see standard methods. For now it is too complicated to use inovative solutions. I calculated equations: -Va*(G4+G03+G3+G2+G02) + Vc*(G2+G02) + Vb*G4 = -E3*(G03+G3) + E2*(G2+G02) -Vc*(G5+G02+G2+G6) + Vb*G6 + Va*(G02+G2) = -E2*(G02+G2) -Vb*(G4+G6+G01+G2) + Va*G4 + Vc*G6 = -...
  20. evol_w10lv

    Calculate Current, Power, EMS..

    I didn't know, where I have to put circuit ground, that's why I put it, where The Electrician suggested. Here are the component values: E1 = 40V E2 = 50V E3 = 30V R01 = 0.1 Ohm R02 = 0.2 Ohm R03 = 0.2 Ohm R1 = 3.9 Ohm R2 = 3.8 Ohm R3 = 2.9 Ohm R4 = 4 Ohm R5 = 5 Ohm R6 = 4 Ohm Can you chek my...
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