Kevineamon

Hi Studiot - I'm an undergraduate studying electrical and electronic engineering. Perhaps my questions might be better placed in an electronics forum? They're becoming quite complex. I'm slightly older than the other students. Unfortunately some of the younger folks, in their wisdom, decided to complain about the lecturing staff. My Easter work load seems to reflect the outcome of said complaint...

They say - "youth is wasted on the young." They were right imho... sigh...

Ok so then

ix = -48 / 4 = - 12 A

across the 4 ohm resistor....

Ahh ok I think I see...

You are correct about the blue - Those are predefined. The Ix, the little Ix on the wire, is also defined in the problem. I just always label currents in red.

The rest of the currents are my own naming convention.

As for the -36 Bender. It looks to me as if 36 is travelling into V2. Therefore IY should be negative.... I think....

Guys can anyone see where I'm getting these negative values from. Probably need to sleep tbh. I know it's probably that -36 but I can't think why, it shouldn't be so...

Any ideas would be great.

Thanks Studiot. I was thinking that... Unfortunately I have worse problems now. RL circuit analysis. Yeh... Noooo.... wt??? I'm so dead in this test.

Apologies for the size of this image. I did try to resize it on Photobucket. Seems to have had little effect.

So I'm having a problem with this. I've been studying the past several hours, learning how to calculate these things. The more simple type. eg. Find ib, ie, ic, Vcb, Vce...

I had taken notes in class, for the answers to this new type of question above; where we have this VCE(sat) thingee...

Now I've written:-

IC = (VCC - VCE) / RC

IC = 5.02 / 6000 = 0.8mA

Question is where the heck am I getting this 5.02?

At first I thought I'd gotten the 0.2v from the VCE(sat) thing wrong. That it should have been 0.2 instead of 0.02 and that I should have added instead of taking away... what I mean is (VCC + VCE).

Problem is I've got another example just like this. So where am I getting this 5.02 from?

Thanks guys !

I see the parallel now. Silly me. No it's not homework as such. Well I guess it is... I'm just studying I have tests in a few weeks.

Also should I have posted this in the homework section?

Hi guys I'm new to the forum. I hope this is in the correct area of the forum.

Struggling with a few problems on capacitance.

Here's the question.

Determine CT for the circuit below.

So I'm thinking this is the equivalent capacitance.

Now those three capacitors in uF. I'm thinking they should all be in parallel in which case they get added. I think...

Then the CT for them should be 0.111uF

10000pF I've worked out as 0.01uF

So 0.111 in series with 0.01... looks like to me...?

[math]1/((1/0.01)+(1/0.111)) = 9.17*10^{-3}[/math]

Problem is I have 0.121uF as the answer from the lecturer.