Recent content by paralumina

If you want to accelerate the ring, aluminum is diamagnetic and would be accelerated through the coils without the iron, but I am not sure that this is what you are wanting. I know my physics teacher had a demonstration for this, and he would ask a student to hold the ring down with the...

Sounds almost like a gun. Maybe try Ampere's Force law?

That sounds interesting to me. I would like to hear more about your hypothesis.

I never heard of a Bitter electromagnet before this thread. Link for those who are curious. http://en.wikipedia.org/wiki/Bitter_electromagnet How big of a magnetic field are you needing?

That description sounds about right to me, but I think that resistance has a lower bound of 0 because if it actively draws the current, then it does not resist the current. In another way, the measure of conductance (1/R) describes how well a conductor allows a current flow through it. With a...

To me, if you want to see the perpetuation of your field, the best to do is study it. Like any other, if no one studies or contributes to theory and concepts of electrical engineering, it will disappear. Like how the Romans had to 'rediscover' glass after the classical Egyptian culture...

old jim, I've never had the fortunate opportunity to be able to experiment with DC generators. Maybe I should find an old car alternator in the garage? I've never heard of a differential compound machine, but I will do some searches into it. Thanks for the encouragement. It's been 8 or so...

Thank you for your input. It sounds like it acts like an inductor, but I think my calculation was wrong because 10KH seems like a lot.

I've found some more sites I think that will help others with a similar problem for understanding how ballasts operate appropriately. This first one seems excellent on wiring and repairing fluorescent lamps. http://www.repairfaq.org/sam/flamp.htm This one seems to explain in terms more...

If I am to understand, when there is a current, the magnetic field within the coil causes the core to become magnetic, and when the current raises or drops, the now magnetized core reacts and fluctuates as needed?

Are these things rated like other inductors? I've tried to find this answer on the forums and on the web, but I've found nothing to get me closer to this answer. I forget how I came to this number, but it seemed like it came out to 9450Henrys. That seems high and not ordinary. The post I...