Recent content by jrand26

Range is about 50-750 mu H, application is in simulating vehicle passing over in-ground inductive loops. I'm not aware of any restrictions on the AC signal or DC saturating current. It needs to change quickly electronically (I'm doing that with a DAC). A gyrator circuit was looked at but...

I'm an EE student doing vac-work at a place where they essentially want a variable inductor, but controllable to really precise levels (up to 0.01 mu H). Someone here before me did their thesis on methods for doing this and they determined that this was the best solution, and my project here is...

Hi all, I'm working on designing a variable inductor using a ferrite core. The basic idea is that I have a large wound inductor on the central arm which I pass a DC-current through, and a smaller, variable inductor on one of the side arms. As you increase the current through the main winding...

Hi guys I'm an electrical engineer and we're currently doing some control stuff which involves mechanical systems. I'm having particular trouble with a two body problem, I understand how to do the free body diagram and get the equations of motion, but I'm not sure how to get the transfer...

Thanks Chopin, that helps a lot.

Hi guys, I'm having some trouble with bra-ket algebra. For example, our lecturer did on the board, <Sx+|Sz|Sx+> So what I would do is, ignoring any factors of 1/sqrt(2) or 1/2 or hbar. Sx+ = |+> + |-> Sz = |+><+|-|-><-| => ( |+> + |-> )(|+><+|-|-><-|)( |+> + |->) This is...

Ok thanks, now I'm getting 137cm, and its probably because my function is a bit out of the points. Also, Is my latex correct, I'm supposed to see the [tex] stuff right?

Homework Statement The cross-section of a channel is parabolic. It is 3 metres wide at the top and 2 metres deep. Find the depth of water, to the nearest cm, when the channel is half full. Homework Equations Nil. The Attempt at a Solution I found the function for the graph to be...

Interesting, thanks for your help.

Thanks for replying. Need to solve for x. So are you guys are saying that this equation is 'unsolvable'? I may have used the term 'algebraically' incorrectly. What I meant to ask is that can you rearrange for x and get the answer out (answer is 100 iirc).

Hi guys What I have isn't really a 'homework problem', but I thought I'd post it here anyway. We're doing sort of an introduction to integration currently (areas between curves, u substititon etc) and one of the problems we had involved finding the x intercept of two functions first. It ended...