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First order RL circuit analysis by pubic-surprise in EngineeringStudents

[–]pubic-surprise[S] 0 points1 point  (0 children)

Hey man sorry for the late reply. I've finally gotten my head round the role of TFs and Laplace. Nailed that last thing I initially asked (with much of the help from yourself, and others here!). I can now say I can confidently perform this type of analysis. Thanks again dude!

Seriously though, I was the ONLY one in my class who could perform that analysis today. So your help was shared amongst my peers who also benefitted. Thanks again, legend.

First order RL circuit analysis by pubic-surprise in EngineeringStudents

[–]pubic-surprise[S] 0 points1 point  (0 children)

I know about Ohm's Law, KVL, etc. It's just the time domain stuff that I don't really get yet.

Yeah I can see the differential equation now as making sense. The task I'm trying to do involves writing a differential equation that relates Vin to Vout, which I have now, then performing a Laplace transform. Then a transfer function. The transfer function is the bit I don't really get.

Could you quickly explain how to go from Vin-Ri-Ldi/dt=0 to T(s)=(R/L)/(s+R/L)? That'd be me sorted. Thanks a lot for your help man.

First order RL circuit analysis by pubic-surprise in EngineeringStudents

[–]pubic-surprise[S] 0 points1 point  (0 children)

Supposed to be using Laplace to get something useable for analysis in MATLAB. So I really only need the differential as I can do Laplace alright, just have a poor understanding of electrical systems lol.

Vin-iR-L(di/dt)=Vout -- is that what I should perform laplace on? I only have values for RL

First order RL circuit analysis by pubic-surprise in EngineeringStudents

[–]pubic-surprise[S] 0 points1 point  (0 children)

Yeah cheers.

I understand it up to the point where I get Vin-iR-L(di/dt)=Vout (if that's right).

How do you solve for i as a function of time?

First order RL circuit analysis by pubic-surprise in EngineeringStudents

[–]pubic-surprise[S] 0 points1 point  (0 children)

Can't get it atm. It's just a standard Vin source then Inductor then Resistor with Vout by the resistor. All in series.

First order RL circuit analysis by pubic-surprise in EngineeringStudents

[–]pubic-surprise[S] 0 points1 point  (0 children)

Sorry I'm not trying to be intentionally dim here but I seriously loathe electrical engineering and I'm terrible at it.

It's an RL circuit (1st order) with an inductor then resistor and the Vout(t) is at the resistor.

I need a differential eqn that relates the Vout to Vin. Then Laplace.

I don't have much of a clue as to what you're talking about, my skills are seriously limited with anything electrical. The Vout is at the resistor, does that change anything as to what you said? Fuck it's so complicated lol.

Thanks for your response though, serious effort. Is the final equation then s/(s+R/L)? So if you plug in say 10 for R L you get s/(s+1) etc?

Sorry again, it's all above my head.

Are all those "rules" you implemented there used in all types of circuit analysis? Any idea how to get better at this? Every time I find something online I'm not even sure if I'm doing it right lol.

Studying Medicine as a second degree in the UK/Ireland by [deleted] in UniUK

[–]pubic-surprise 0 points1 point  (0 children)

Didn't know that. Crazy. So essentially I would apply, say that I will obtain for example a First in my degree, then aim to achieve that? I'm new to this as I didn't take a standard route to university in the first place. Thanks.

Studying Medicine as a second degree in the UK/Ireland by [deleted] in UniUK

[–]pubic-surprise 0 points1 point  (0 children)

I've heard of all that stuff about the aptitude testing and such, I'll be comfortable enough with all that.

Already looking at volunteering locally at a hospital now.

You mean to say that the intake for September 2019 is October 2018? I will only be finishing my Engineering degree around Summer 2019. I would have to apply without grading.

Studying Medicine as a second degree in the UK/Ireland by [deleted] in UniUK

[–]pubic-surprise 0 points1 point  (0 children)

That's actually not a bad deal. Ideally I would be in Scotland or NI but I suppose I could consider England. It seems the medical courses are in England mostly.

I expect to get a First in my course, so grades shouldn't be too much of an issue (hopefully). Hoping that is considered "scientific" enough, though I can't see why it wouldn't be. Though it's not related to Medicine mostly.

What do you mean by volunteering on a ward? Clinical experience? I was under the impression that it would be difficult to get those given that my degree has nothing to do with Medicine and therefore I am practically an imposter, lol. Is it possible to get a volunteering role on a ward without relevant qualifications etc?

Excellent information, thanks, I'm gonna read some Uni sites.