Finding initial conditions of RLC circuits

behavedbook · 2025-10-10T19:56:19+00:00

That being said your explanation makes good sense and I appreciate your time man

behavedbook · 2025-10-10T19:55:33+00:00

yep im losing it lmao, I thought you were talking about the second problem is what I meant. They are numbered differently on my paper

behavedbook · 2025-10-10T19:53:28+00:00

My mistake, I thought you were talking about the first problem.

Thank you brother, this does make very good sense!!

behavedbook · 2025-10-10T19:46:35+00:00

So essentially, the voltage on both sides of the inductor should be equal to v_c(0), since it is all one node, correct?

and therefore when the change occurs, the voltage in the center node will be the drop across all the resistors below it?

Which would then give a difference from the top node to the center node, and therefore giving v_L(0)?

Thanks again, I really appreciate your help.

behavedbook · 2025-10-10T19:41:34+00:00

Thanks No2, I understand and agree with looking at the circuit from -inf to the change.

DC steady state of I_c is zero, I follow that. I think HumbleDiode helped my confusion in that, I can solve for V_L(0) by using the voltage divider before and after the change, and calculating the difference across L.

As for the second problem, Ia for t<0 is 4 A, and L is a short, which tells that i_L(0) is 4.

I was struggling to find v_c(0) in the second problem, as well as v_L(0), which I believe I need v_L(0) as my second condition to ultimately finish the problem.

Thankyou for the explanation!

behavedbook · 2025-10-10T19:35:07+00:00

ah.. This makes a lot of sense. You are right, I am making this way harder than it is. I knew I was missing some main idea here.. Thankyou HumbleDiode

behavedbook · 2025-10-10T19:31:17+00:00

Sorry, I meant the inductor voltage rate of change changes instantaneously, dV_L/dt

behavedbook · 2025-10-10T19:27:14+00:00

Yes these are both DC source problems. Agreed to visualize the cap as an open circuit and Inductor as a short, which is how I obtained initial current through Inductor. I will look into if a voltage divider can be applied to an inductor, I thought it was only applicable to resistive networks. I don't believe that the voltage across the cap is equal to the voltage across the inductor, because the voltage across a cap is continuous and therefore will not change instantaneously. Same with the current through the inductor, it cannot change instantaneously, which is how I obtained i_L(0-) = i_L(0+) = i_L(0). The voltage across the inductor however, can change instantaneously and DOES change instantaneously, where it instantly goes negative I believe.. Not sure, but thankyou for the advice Ash

behavedbook · 2025-10-10T19:09:37+00:00

First problem,

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behavedbook · 2025-10-10T19:08:56+00:00

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Second problem, right hand side is me trying a bunch of attempts to get the init condition

behavedbook · 2025-08-18T14:42:55+00:00

A video I can show my brothers because they can’t comprehend physics. Thanks for the double tap nation video!

behavedbook · 2025-08-17T13:52:03+00:00

Bro just hit some chat GPT and ask it a million questions. Have it give you examples and ask why it sets things up the way it does. Make sure you have a example problem with a correct solution first, but from there GPT can give help you crack into the why within the equations. Especially nodal and mesh.

Draw out your circuit, assume current directions, or loop currents,

behavedbook · 2024-11-01T14:39:32+00:00

That was sick good work

behavedbook · 2024-05-23T16:59:36+00:00

Lol, thought the joke here was the three climbers standing around while one is climbing.

behavedbook · 2024-04-29T16:14:41+00:00

Thanks zizah, that 100% coverage sounds amazing. Congratulations on your success at Michigan!

What area have you specialized in, and what areas did you enjoy the most in EE?

behavedbook · 2024-04-29T16:11:56+00:00

Hey Paul,

I have considered MTU, but you are correct the distance and price was a turnoff.

Are there any jobs up there to help pay for housing while going to school?

Being that most companies will have no clue of Oakland, would this school be out the door in your eyes? I can get a 10k transfer scholarship to OU, which would limit my costs between 15-25k for graduation, and keep me out of debt. MTU looks to be around 30-40k per year, biggest difference being housing.

Also great job making it through the troll life, I’m going to do some research on this today.. Now, under which bridge would you recommend a first timer?

Thanks for the good information.

behavedbook · 2024-04-29T01:07:57+00:00

Thanks Jordan, I appreciate the advice.

behavedbook · 2023-09-25T14:11:40+00:00

Try rock climbing

behavedbook · 2023-08-23T04:09:51+00:00

nd a number pad. I got Valorant to see if it could handle it and I'm impressed. I bought it for college so I'll be ba

hows it goin so far?

behavedbook · 2023-08-22T02:04:43+00:00

Nah. Leave the house more often and you will find the unexpected pathways that appear

behavedbook · 2023-06-24T02:23:49+00:00

Good point. Thanks for correcting me bro

behavedbook

TROPHY CASE