Circuits Definition and 1000 Threads

Homework Statement Find ##a)\ H(s)=\frac{V_o}{V_s}## of the filter in the circuit below. ##b)\ ##The center frequency ##\omega_0## ##c)\ ##The band-width B Correct answers: ##a)\ H(s)=\frac{6s}{12s^2+11s+1}## ##b)\ \omega_0=0.28\frac{rad}{s}## ##c)\ B=0.71\frac{rad}{s}##...

to skip the introductory part go straight to the question between the hyphens. I wanted some help mending two seemingly contradictory concepts. on one hand we have ohm's law: I= \frac{V}{Z} stating that current is proportional to the potential between two points. makes sense. on the other...

Homework Statement This isn't a 'homework' problem as such. I'm currently in University Physics II (E&M), and I've become really interested in magnetic monopoles. They haven't been discussed in any kind of depth in my course, but I'm trying to figure out how a magnetic monopole (if they exist)...

Homework Statement Find the transfer function ##H(s)=\frac{Vi(s)}{Ii(s)}## The circuit consists of a voltage source and a 5H Inductor in series with a 10Ohm Resistor which are in parallel with a 10uF Capacitor in series with a 500Ohm Resistor. ##\rightarrow## Diagram here. Homework Equations...

Homework Statement Homework EquationsThe Attempt at a Solution I did a source conversion on the right-most 1A current source to get a voltage source to work with for this question. However, when I tried to work out the solution, my values seem wrong, but I don't understand why, especially...

Homework Statement Homework Equations ##v1 + v2 + v3 = 0## (KCL) The Attempt at a Solution I don't understand why my solution is wrong. I was taught that if I were to use Node Voltage analysis, I should put nodes with voltage sources into supernodes which was what I did, however, my...

[FONT=Courier New] Without the salt bridge then there is no flow of charge and there are no electrons flowing in the external circuit.?HOW?i know function of salt bridge is only to maintain neutrality i.e if salt bridge is not there there will be accumulation of positive charge in one half...

Homework Statement Answer the following questions about the given circuit. These questions will walk you through the steps of the analysis process we call nodal analysis, which is applicable to all electric circuits. 2.1 (3 pts) A quick Fermi-type problem before we start. Use Ohm’s Law to...

Homework Statement A capacitor of capacitance ##C_1 = C## is charged by a battery of potential difference ##V_0##. After fully charged, it is disconnected from the batter and reconnected in series to a second, uncharged capacitor of capacitance ##C_2 = C/2## and another battery of potential...

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...

Hi, I have setup the circuit here: http://www.next.gr/circuits/nicd-battery-charger-l36249.html in LTspice, and am trying to understand it. If I actually build it, its purpose will be to charge 19.2 V NiCd batteries. My question is if the regulated voltage coming from the LM317 output needs...

Hey all, This question may sound daft, but how do I normalize angular frequency? For a little background: I'm trying to optimize some circuits, and I've managed to write some successful code using the "Design of Ultra Wideband Antenna Matching Networks" book, but the code requires normalized...

Homework Statement Hi, I need to find the total resistance of a circuit (attached file). I'm pretty sure it's really and straight forward but I'm a chemical engineer and this is coursework so just wanted to make sure I was doing it right. Homework EquationsThe Attempt at a Solution Do I just...

I am just wondering why or how we introduce the J operator in analyzing ac circuits. I want more of a proof for this.

1. Homework Statement What do you predict the voltage will be measured from B to D directly? Vtot = 1.0 V peak-peak Two parallel branches, one with two 1.5 kOhm resistors in series, one with a 1.5 kOhm resistor and a 0.1 μF capacitor in series (see attached diagram) Homework Equations V=IR...

In the given circuit. It was given that when Vi>Vr diode will be reverse biased or off..and when Vi<Vr diode will be forward biased... but I am not getting how we infer this..??It may sound a very basic question but its not clear...I am not able to decide it

Homework Statement Look at the circuit given in figure 1. Solve for the three currents, I1,I2,I3. Homework Equations KVL: Sum of voltages in a closed loop equals zero KCL: Sum of currents entering a junction equals the sum of currents exiting a junction Ohm's Law: V=IR NOTE: Nodal analysis...

NCEES Reference Handbook p.206Hi, My question is: In Fig.2, how can R1 and R2 be parallel? If anything, it should be in series because capacitor in the long run is an open. Thanks ahead.

Homework Statement Find the value of R where RL equals 50 Ω, for maximum power transfer I= 2A, R_L=50 ohms Homework Equations R_th=V_oc/I_sc KCL,KVL,V=IR The Attempt at a Solution First, I created an open circuit including everything except R_L. Then i tried to solve for the Open Circuit...

Homework Statement [/B] Homework Equations There's not much to write here except parallel resistors equation. This is supposed to be a superposition problem. How did he use a source transformation because I have no idea why and where he did the equivalent resistor and why did a current...

Homework Statement Find the charge q(t) flowing through a device if the current is: 20 cos(10t + π/6)μA, q(0) = 2 μC Homework Equations ∫ i(t)dt +q(0) The Attempt at a Solution I am studying for a test by working all the problems I can and then looking at the solutions manual. The solutions...

Homework Statement In the given attachment (supply has voltage v(t) , ) we have to write mesh equations .I am not getting how to decide the polarity of voltage across inductor ?Homework EquationsThe Attempt at a Solution There's nothing much to do.. The only thing I am doubtful about is the...

How do you protect a power supply that is floating and not connected to Earth ground. Do you still connect the ESD diodes to ground and Vcc? Are there different techniques.

Homework Statement part 1 Consider the circuit of figure G, where R1=20 ohms R2=10 ohms X1=37.7 ohms X2=-53.1 ohms. Compute the current and the phase angle between the current and the applied voltage. In the figure R1 is in series with X1 and R2 and X2 are in series. R1 and X1 are in parallel...

Homework Statement Determine the power absorbed by the 15 ohms resistor, see circuit below.(the ix, i1, and i2 are things i added) http://puu.sh/bQyEk/5f47888b03.png 2. Homework Equations the KCL law the KVL law the ohm's law power = voltage * current The Attempt at a Solution I calculated...

In the attached circuit , I I am confused about the corresponding KVL equations which will be used to draw the waveform ..this is what I am doing ..please see if I am going right or not..?? when Vi >0 , the diode will be reverse biased so , the diode will be open , so the equation should be...

Problem: Attempt: But here is what happens when I apply nodal analysis to the same node at t>0: Is this a contradiction? Is the voltage of the resistor at t=0+ equal to 16V or 0V?

In the picture that i attached i need some help ******** In the book it says ''' The negative terminal of the battery E_1 is connected to b. So at the lower end of the resistance R_2 the pd is 6V. "' What is the significance of this statement?

Hello! for the easy circuit 1 i see that the diode does cut out every half of the sinus wave in alternating current. ("Frequenzgeber" means frequency generator) the device with the peak symbol is an ozilloscop. i don't understand what happens with the voltage U(t) in circuit 2. what...

Hey! I have a problem with the theory side of this circuit here: 1. The problem I know that you are supposed to pick the buttom node of the circuit to represent your significant node at which you shouldn't construct a series of equations. But what if I picked another node as my significant node...

Homework Statement Basically, I need to know the power dissipation (W) for three resistors using aw 12V battery: 120, 80, and 50 ohms. https://webwork2.uncc.edu/webwork2_files/tmp/Fall2014-Engr1201-Common/img/2ff2f0ce-cb10-3786-8109-c42346130316___1a2e5eeb-8657-3983-941f-b7d8a9123afa.gif...

Hi, I would like to know what the theoretical implication is, as it pertains to RC circuits of the following hypothetical situation(s): If one were to connected an ideal discharged capacitor in parallel with an ideal voltage source with zero resistance in the loop, the calculated RC time...

I have having some serious doubts in clamper circuits. For example,let me take the example of a +ve clamper circuit. http://www.daenotes.com/images/positive-clamper.gif The diode I am considering is an ideal one.In the notes,it is written that during the negative half cycle of the A.C...

Hey guys can someone please give me a good explanation on why in an RC circuit the resistor voltage is leading the capacitor voltage by 90°. While in an LC circuit the resistor voltage is lagging the inductor voltage by 90°. Thanks

Hello, Suppose we have an electric circuit consists of a battery and 2 wires connected to both ends of the battery. When the two wires are not connected together (open circuit) do the surface charges of both conductors accumulate? if yes, can we say at the end of both wires separated by the...

Homework Statement the problem is a circuit analysis. I can try to make the circuit but the image i created shows all the resistors and voltage sources. imgurl Find i,v,is,vs Homework Equations \sumloop vi=0 \sumnode ij=0 The Attempt at a Solution I can not make a...

In clipper circuits the diode clips the input signal upto a particular voltage , say if a battery of V volts is connected in series with the diode then it'll clip it at voltage V.. in the attached fig.. there are 2 cases.. in both cases , the diode clips the input sinusoidal waveform at V...

Hello. Can someone check if I drew the circuit for (a) correctly? By the way, I translated the question wrong, it doesn't actually mean 2 NAND gates or 2 NOR gates, it just means NAND gates with 2 inputs and NOR gates with 2 inputs. And how to do the second one?

Hello all, I am currently studying as an EE and realized I messed up something with my career path. I am not sure if it possible to get an internship at a company for primarily DSP if you haven't taken a DSP class? If not, things could be mended if it were possible to take circuits 2...

my living room light switch controls two lights. one of the light bulbs just went out. since the switch controlled two bulbs, aren't they in parallel? so then why didn't the light bulb that is still on get any brighter?

How can one measure power factor in AC circuit? http://www.cnktechlabs.com/index_files/cnkdevelopmentkit.htm

I don't know under what forum to post this but since I am learning about it in calculus, i guess ill just put it here for now any maybe itll get moved to the right place. I'm given a simple circuit with resistance $12 \varOmega$ and the inductance is $4 H$ with a voltage of $40 V$. Find I(t) and...

I can do circuit problems, but conceptually I cannot figure out what is going on from a basic physics perspective, with respect to the following: Say you have a circuit with a battery (emf = V) and a resistor (resistance = R). Then, electrons on one side of the resistor are in a constant...

I am currently working a problem just as practice for Physics 2 E&M and I came across a symbol in one of the circuits that looks like this - ---...

Homework Statement An RLC circuit has a resistance of 2.0 kΩ, a capacitance of 8.0 µF, and an inductance of 9.0 H. If the frequency of the alternating current is 4.0/π kHz, what is the phase shift between the current and the voltage? A) -1.6 rad B) -1.5 rad C) 36 rad D)...

I've been trying to to solve this for hours now and I am frustrated. I think I have vx', which might be wrong, but I cannot find vx" for the life of me. I have posted all my work, I know what I have down so far is correct, but I am missing something to move forward. Homework Statement...

Homework Statement For an RLC circuit with a resistance of 13.0 kΩ a capacitance of 7.0 µF, and an inductance of 35.0 H. What frequency is needed to minimize the impedance? A) 0.064 kHz B) 0.010 kHz C) 12 kHz D) 2.1 kHz Homework Equations Xc = 2∏ƒL XL = 1/ (2∏ƒC) The...

I was thinking, a circuit don't need necessarily be a circuit, can be something like this: How compute the voltage of a circuit if the voltage of the source is different of the sink? Also, how compute the voltage, the current, resistance, etc, of a circuit when we have various sources and...

can someone please give me some information about electronic oscillator circuits, in particular pulse tone oscillators (thats what it says it is) consisting of a resistor and two capacitors. how does the resistance/capac effect frequency? what does the time constant have to do with it? does the...

Hey, I don't if this is the right place to ask ( it is not a homework question but just a curious one about what i read in my textbook).. How can AC circuits even work? If the drift speed of an electron in a normal household wiring is something in the micro m/s and it reverse every 1/120 per...