Rlc circuit Definition and 309 Threads

Homework Statement I have been trying to set up an LRC series circuit where in place of an inductor we have a pair of coupled coils. My aim is to determine the resonant frequency in the circuit when the voltage across the resistor or the current in the circuit is at a maximum. I am using a...

I have only just found out about inductors, and am trying to figure out how a circuit with an inductor and a capacitor could change dc current to ac current. With the set up of the circuit, would it suffice just to have the dc supply with a 'gate' that stops/allows through the dc current with a...

In the direct current circuit, when you have a switch and you turn it on, you get the coil to generate a current to the opposite direction but the magnitude isn't big enough to offset the main one. But in the case of alternating currents, the coil seems to generate enough current up to the...

Homework Statement I am completely stumped on this problem: In this circuit: v= 30.0 R = 400 ohms C = 2.50 micro coulombs L = .300 H The switch (pretend you see one) is close at t=0 Current i1 flows through L and current i2 flows through C QUESTION: At what time (t) does i1=i2 ...

Hello, I have to solve the following problem but I don't know how to find the I(t) from I(ω). I've already found that the total impedance of the circuit should be (1000/29)-j(255/29). Can anyone help me, please? I haven't done Integration and Derivatives. Thank you for your help.

if I consider a circuit consisting of a capacitor, an inductor and a resistor and using kirchhoffs voltage rule for the circuit i come up with the following L(Q''(t)) + R(Q'(t)) + (Q(t))/C = 0 I solve for the roots using a characteristic equation of the form LM2 +MR +(1/C) = 0 solving this for...

Homework Statement In each of the four circuits shown, an AC input voltage, ##V_0 cos(\omega t)## is applied on the left and the output voltage is measured on the right. Treat the input frequency as a...

Homework Statement In the circuit shown in Figure Q2(b), two loads A and B are connected to the source. The cable connecting the power supply to the load is modeled as series R and L of values R = 0.1Ω, L = 0.1 mH as shown in the figure. The loads have the following specifications...

Homework Statement In the Figure Q1 (c), the switch S was closed for very long time before it is opened at time t = 0. Find the value of vC(t) and iL(t) at t = 0+ c L i.e. immediately after the switch was opened. Homework Equations V = IR The Attempt at a Solution From DC steady state, we...

I'm writing a short document in LaTeX and I can't find any .eps files online for inductors, capacitors, or resistors. If someone has a Mayura draw circuit containing those components that they would share, I could modify it with MD to do what I need. I've tried drawing an inductor myself, but it...

Homework Statement In the circuit in the following figure, the resistor is adjusted for critical damping. The initial capacitor voltage is 15 V, and the initial inductor current is 6 mA and R=1250 ohms Find vC(t) for t≥0. Express your answer in terms of t, where t is in milliseconds...

Homework Statement OK, I have the response function for a notch filter, and I want to find out what the frequency where it has the -3dB response. Homework Equations H(\omega) = \frac{1-\omega^2LC}{1-\omega^2LC+i\omega RC} This is my response function. My \omega_0 = \frac{1}{\sqrt{LC}} The...

Hi, I've been trying to teach myself electronics. I have read a lot of introduction books and now want to build a circuit. However, I have not been able to find good books on how to assemble simple circuits. In other words how the parts (resistors, caps, coils, diodes, transistors) go...

Homework Statement Homework Equations Impedance formula and couple others.The Attempt at a Solution

The equation for this physical model is: http://upload.wikimedia.org/wikipedia/commons/f/fb/RLC_series_circuit_v1.svg And for this is: http://upload.wikimedia.org/wikipedia/commons/d/d0/RLC_parallel_circuit_v1.svg But and if now I add a source of current in those schemes, the...

Homework Statement In an RLC series circuit, the rms potential difference provided by the source is V = 150 V, and the frequency is f = 220/pi Hz. Given that L = 0.7 H, C = 70 µF, and V_R = 80 V, find: a) I (rms); I = A b) R; R = Ω c) V_L (rms); V_L = V d) V_C...

Hello, I am working on this problem However, I am getting a 900t term that the solution is lacking. I am wondering if what I did was wrong. My formula is consistent with the formula for a series RLC circuit that is critically damped.

Homework Statement A series RLC circuit contains the following components: R = 250 Ω, L = 0.300 H, C = 3.00 µF, and a source with ΔVmax = 240 V operating at 70.0 Hz. Our goal is to find the phase angle, the power factor, and the power input for this circuit. (g) Find the power input to...

Homework Statement Attached an image with the exact question. Homework Equations α = 1/2RC ω = 1/√(LC) α > ω i(t) = Aest + Bect The Attempt at a Solution (a) First I found ω and α ---- ω = 1.4*10^5 1.4*10^5 < 1/2RC → R > 357.1429 Is it safe to assume...

Homework Statement This is just an example from the book. See images. I am not sure how they found v(cap) to be equal to 97.3 V. Homework Equations Nodal Analysis The Attempt at a Solution 3 A - i(ind)/48 - i(res)/100 = v(cap) Too many unknowns, that's why I think I'm way...

Homework Statement A series RLC circuit is driven by an ac source with a phasor voltage Vs = 10∠30◦ V. If the circuit resonates at 103 rad/s and the average power absorbed by the resistor at resonance is 2.5 W, determine the values of R, L, and C, given that Q = 5. Homework Equations...

Homework Statement for the circuit below, compute frequency response H(w) using method of complex impedence. then if x(t) is input signal (we have equation but, say it is A*sin(wt), find y(t). Homework Equations transfer function H(w)=vout/vin The Attempt at a Solution R || L =...

Homework Statement A series LCR circuit with ##L=0.125/\pi## H, ##C=500/\pi## nF and ##R=23\,\Omega## is connected to a 230 V variable frequency supply. For what reactance of circuit, the power transferred to the circuit is half the power at resonance? Homework Equations The...

Homework Statement I attached a picture of the circuit. f(t) = (e-t)u(t), VC(0-) = 2V, iL(0-) = 1A Obtain an expression for the total response, y(t), for the given system by finding the natural and the forced responses. Homework Equations v(t) = Ri(t) v(t) = Ldi(t)/dt v(t) =...

Determine the differential equation relating \(v_i(t)\) and \(v_0(t)\) for the RLC circuit in the figure. Would this just be \[ v_i(t) = 3i + \frac{di}{dt} + 2\int i(t)dt \] but \(v_0 = 2\int i(t)dt\). Do I need write it as \(v_0\) or as \(2\int i(t)dt\)?

In the circuit shown below, find the value of the resistance R that is necessary to make the magnitude of V equal to 3 volts. Can anyone please help me to solve this out?

I am trying to figure out how to calculate the time at which current will peak in the following circuit. Seems to me the capacitor will have no effect and the circuit will become a basic LR circuit in which the time constant is: 10/10010=.00099 x 5 = 4.9mS. Is this correct? Any help...

Homework Statement A coil of inductance 0.20 H, resistance 60ohms is connected in parallel with a 20 µ F capacitor across a 20 V, variable frequency supply Homework Equations The Attempt at a Solution Homework Statement I have done a RLC circuit diagram for the problem above...

Homework Statement For a series circuit with the following components: 1. Vin(t) 2. 1K resistor 3. 100 mH Inductor 4. 1 uF capacitor 1. Write down the differential eqn. for Vc in the circuit. 2. Solve the DE, calculate the natural and forced response with the following initial...

Homework Statement A series RLC circuit consists of resistor of 200Ω, an inductor of 0.214H and a capacitor of unknown value. When this circuit is energized by 240∠0°, 50Hz sinusoidal supply, the current was found to be 2.6∠0° amperes. Determine: (i) Value of capacitor in microfarad (ii)...

A resistor, an inductor of inductance value of 0.02H and a capacitor are connected in series. When an alternating voltage of 200sin(1000t-10°) is applied to the series combination, the current flowing through the circuit is 20√2sin(2000t-20°). Determine the values of resistor and capacitor...

Homework Statement http://imageshack.com/a/img580/682/z3mt.jpg Derive a linear differential equation for the above LTI system. Homework Equations i_C=C\frac{dV_C(t)}{dt} V_L=L\frac{di_L(t)}{dt} The Attempt at a Solution Using KVL, I can get the following equation...

Homework Statement A single loop circuit consists of a 7.2 ohm resistor, a 11.9 H inductor, and a 3.4*10^-6 F capacitor. Initially the Capacitor has a charge of 6.3*10^-6 C and the current is zero. Find the charge on the capacitor N complete cycles later for N=5.Homework Equations 2. Homework...

Homework Statement A circuit contains a 100Ω resistor, a .0500H inductor, a .400μF capacitor, and a source of time-varying emf connected in series. The time-varying emf is 50.0 V at a frequency of 2000 Hz. a) Determine the current in the circuit. b) Determine the voltage drop across...

Homework Statement Find vL(0+) Homework Equations V=IRThe Attempt at a Solution I have an exam tomorrow and so I'm in a bit of a hurry so please excuse the horrible drawing. The problem I'm having with this question is a conceptual one. I've found vL in this this circuit by first finding...

This is my question 1. and this is my question 2. in a RLC series circuit show above are replaced following : R=500Ω L=0.4mH and C=100pF the circuit is connected to the terminals of an ac source with an rms voltage of 1V, and a variable frequency calculate the following A) resonant...

Trying to find rms current at resonance and rms voltage across each elements (resistor, inductor and capacitor) I got the answers but i want it do in multisim ! i got : R = 500 ohm L = 0.40mH C = 100pF The answer is rms current: 0.002A rms voltage: Vr = 1V Vc = 126.52 V Vl = 126.52 V...

Homework Statement Hi i got this question ? have to find Vr and VL so can i use this formula : VR = IR VL = I * XL? confuse ?? need help ?? am i on right track?

Homework Statement For the circuit shown (in the attachment), find iL(0+) and Vc(0+). Homework Equations V=IR The Attempt at a Solution At t=0-; the inductor can be replaced by a short-circuit and the capacitor by an open circuit. This shorts out the resistor so by Ohm's law, the voltage...

Homework Statement R=50Ω L=5H C=1/125F vs=200.[1+u(t)] V Find i(t) Homework Equations The Attempt at a Solution Write the KCL equation -vs+Ri+L.i'+1/C.∫idt=0 Do the derivation to get rid of the integral, replace all possibly values, we got: i''+10i'+25i=1/5.vs' (*) solve...

Homework Statement Homework Equations The Attempt at a Solution I found ω0 = 1/√LC when IR is at its maximum. (Purely resistive) I have a feeling that the last part requires an approximation and then an expansion which gives 2 values of ω. But the thing is, (1 + x)n ≈ 1 +...

RLC Circuit - Given V,f,P find R? You have an inductor plugged into a 100 V AC source with a frequency of 50 hertz. There is a power of 6 watts and this can modeled as an LR circuit with R being the resistance from the Inductor. Calculate R.

Homework Statement The tuning circuit in an FM radio receiver is a series RLC circuit with a 0.200 µH inductor a. The receiver is tuned to a station at 104.3 MHz. What is the value of the capacitor int he tuning circuit? b. FM radio stations are assigned frequencies every 0.2 MHz, but two...

Homework Statement Our professor makes us design our own lab. For the lab we have unknown resistors, capacitors and inductors. Using an oscilloscope, function generator and some wires we have to figure out what the values are for all these elements. Homework Equations The Attempt...

Homework Statement I need to be able to determine the equivalent parallel resistance of an RLC parallel circuit, from a measured voltage when the circuit is at resonance. Homework Equations The Attempt at a Solution I know the values of the circuit element, but I'm not sure how...

hello, i am deriving an equation for designing an inductor in a coupled RLC circuit. is there an equation for calculating inductor value by knowing the input and output voltages & output current of the RLC circuit ? i have tried KVL and KCL equations but in vain. please help thank you

Homework Statement find iC(t) in the circuit and plot its waveform for t>=0. Homework Equations i(t)=i(infinity)+e^(-at)[D1cos(wdt)+D2sin(wdt) D1= i(0)-i(infinity) D2=i'(0)+a[i(0)-i(infinity)] aux.: w0=(LC)^(-1/2) wd=sqrt(W0^2 - a^2) s1= -a+sqrt(a^2 - w0^2) s2= -a-sqrt(a^2 - w0^2) The...

Homework Statement A power supply with ΔVrms = 111 V is connected between points a and d in the figure below. (It's attached to the thread, but the basic idea is that this is an RLC circuit connected in series). As shown, R = 39.5 Ω, L = 157 mH and C = 73.2 μF. At what frequency will it...

This is really more of a mathematical question than physics. Given a RLC circuit, I will arrive at the following DE: \ddot{Q}+\frac{R}{L}\dot{Q}+\frac{1}{LC}Q-\frac{\epsilon}{L}=0 How do I solve for Q(t)??

Homework Statement SPST switch closes at t=0. Find vC(0-) and iL(0-), iC(0) and vL(0), and vC(infinity) and iL(infinity).Homework Equations The Attempt at a Solution kind of basic circuit, i know, but i just wanted to check my answers in case i did something wrong. At t=0- : capacitor acts...