# Questions tagged [homework]

Use this tag if the question you are asking is an assignment or homework with which you require assistance. EE.SE is not a homework answering service, so make sure you show what you have attempted so far and are specific as to where you have gotten stuck.

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### Is this a legitimate way to determine the Thevenin's voltage and resistance? [duplicate]

I'm sorry I'm reposting, but I'm not sure if my previous question got "closed", since there were some error messages for me at least. Feel free to remove the previous one if it's still open ...
1 vote
96 views

### How do I go about solving the current I1 using Thevenin's Theorem?

I understand from here I'm supposed to solve the current flowing through $R_1$. So I have to remove the $R_1$ and add terminals A and B and solve the resistance between them? Would it be easier ...
47 views

### Solving for V and I in a diode circuit by making assumptions

I want to make sure I understand the solution to this problem from my textbook. The goal is to solve for V and I in the circuit below: They start by assuming that both diodes are conducting and solve ...
1 vote
68 views

### Transient response of capacitor connected to current source with no resistor

I have this HW problem: It has me completely stumped because the usual equation for the transient response of a capacitor assumes the circuit has a voltage source, not a current source, and requires ...
88 views

### Power Dissipation in an AC Circuit

I'm seeking clarification on power dissipation in an AC circuit with a specific scenario in mind. I was able to calculate the RMS current through the AC Mains = √10 A Considering that the upper ...
40 views

### Applying KVL to a grounded MOSFET circuit

I'm rather confused as to how to how this circuit doesn't violate KVL: The two node voltages on the right side of the loop add to -4.16V, which means the voltages on the left should add to 4.16V, ...
501 views

### Overdrive voltage of NMOS vs PMOS

I'm confused whether the overdrive voltage for an NMOS/PMOS transistor is supposed to be $$V_{ov} = V_{gs}-V_t,$$ $$V_{ov} = V_{sg} - V_t,$$ or $$V_{ov} = V_{gs}-|V_t|$$ and whether it matters ...
45 views

### Need help in understanding circuit of PMOS reverse

Given 2 PMOS enhancement: Vdd = 5 V, k1/k2 = 9, Vt = -1. I'm trying to find Voh, Vol, Vil, Vih. I would appreciate help and explanation.
116 views

### Getting wrong answer for mesh current analysis

The circuit diagram is given below, I keep getting the wrong answer for the mesh currents, I always get -1 for first loop and -7 for second loop. Therefor Ix comes out to be 6 which is wrong. It ...
53 views

### KCL in a particular node (problem)

Above is an AC circuit in which terminals A and B are used to connect to a load. I am asked to find the equations for currents coming into and out of nodes 1 and 2 (using KCL). I had no trouble ...
38 views

### How do I calculate Io and n from the Shockley equation given two operation points?

In this exercise I'm given the Vd and Id in two operation points and I need to calculate Io and n from the Shockley equation. I've tried isolating Io and replacing it in the other equation but then I ...
59 views

### MOSFET circuit operating point

Yesterday I spent about two hours trying to calculate the operating point of this circuit without success but I can't accept my defeat. The exercise asks to: "Complete" the operating point ...
100 views

### Need help to find Thevenin resistance and Thevenin voltage

Here is the question I am trying to solve(there are 2 things I need to find. These are Vth and Rth): Here is my attempt: ( please check Vth if it is true ) I couldn't find Thevenin resistance at all ...
74 views

100 views

### How to design a PI/PID controller with a given bandwidth and phase margin?

I've read the article, Introduction: PID Controller Design, which explained really well the effect each branch of the controller has on the rise time, settling time, overshoot, and error, which gives ...
90 views

66 views

### Equivalent circuit problem

I need to find the values E1,E2,R1,R2,R3 such that circuit (b) becomes equivalent to circuit (a) according to nodes a,b,c. Using the superposition theorem I found that the potential difference between ...
129 views

### How to calculate current in a complex circuit? [closed]

Regarding a) How do I calculate the current for I1? Regarding b) How do I calculate IA? I have calculated I3 and I4 by using I = V/R and got the following: I3 = 5 V/10000 Ω and I4 = 5 V/100000 Ω
1 vote
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152 views

### What is the best method for solving this circuit analysis problem in the S-domain?

I'm just curious what the best method for solving for voltage across the capacitor might be. My initial idea was to use nodal analysis but I ran into a roadblock in that I am not entirely sure how the ...
53 views

### How to make a circuit of 6 lights connected to a single battery, with each light having its own switch [closed]

I have a school assignment on how to make a circuit with 6 lights connected to a single battery, with each light having its own switch. I'm wondering how to do this, and I'm hoping for guidance.
70 views

### Connections in 3-phase AC circuits

Does the supply voltage refer to the line voltage or the phase voltage here?
66 views

### Transformer's Hysteresis Loss

Relation between hysteresis loss and the magnetic field intensity is given but I don't know how the loss is affected by the frequency of the current. What is the relation between the frequency and ...
61 views

### Maximum flux in transformers

What is meant by maximum flux here? How can I calculate it? I could calculate the rest of the question comfortably.
161 views

### Resonance in AC circuits

Derive the frequency for resonance condition in the following circuit. My perception is that I need to nullify the j part of equivalent impedence, is that correct? Question: My approach:
35 views

### Need help categorizing keywords and concepts for two different scenarios

I am currently working on a project that involves categorizing certain keywords and concepts into two different scenarios. I am having a bit of trouble determining which scenario each keyword belongs ...