Recent content by simphys

@berkeman, the same representation has been used here https://electronics.stackexchange.com/questions/361673/mmf-diagram-of-a-transformer-why-layers-are-numbered-this-way

Well, that's what I'm struggling with myself, and these are lecture slides. But it could be that it's from the following book as that's what he based it on: Fundamentals of Power Electronics 3rd Edition.

Hey, I was hoping for some help here. It's nothing major, I was wondering why the windings of a transformer are represented in such a manner as in the two following top-view cross-sections (I think) of the transformer. The main question is, normally it is just represented as a normal coil...

Yes I am sorry, I should have said this earlier but I figured it out.. It is a lab report. I didn't read the documentation through for this one. This comes down to the arrangement of an astable operator basically. I was trying to understand why the components were arranged that way, and how the...

TL;DR Summary: Hey, I was hoping for some help on how I would be able to calculate the minimum and maximum frequency that can reached with the potentiometer and also how this circuit works intuitively, because I don't really understand it. Thanks in advance! Hey, The TL;DR sums it up. I don't...

so I need to use the eq.: omega_pr = ##mgr / L_s## with r = 6cm. But from how I imagine/see it, the rod pierces the disk through the middle so how does this create precession if the weight will not cause a torque then and thus a hortizontal change in angular momentum? Thanks in advance!

should've examined it more properly basically.. the problem is not reallly difficult if I would've thought a bit simpler about it. i.e. from the basic principles up.

okay right.. it's the support forces then, correct?

well.. that is exactly what I don't understand.. I didn't understand why the solution has used two integrals in such a way.. I haven't used a volume integral or smtn. I did differently by using a mass element and summing over that with one definite integral.

exactly that is what I didn't do.. should've seen that there still is gravity as well.

It's gravity, isn't it? That the one that creates the torque. If I were to take the 'rotation axis' in f.e. disk2, the gravitational force of disk 1 would still exert an angular impulse

yes apologies

well.. a torque? but internally isn't it?

Well, friction will occur. But I can't see how this creates non-conservation of AM Or.. is it the torque/moment that the force of your hand will apply to the disks when smooshed together that creates an angular impulse?

Here is question + drawing.