Recent content by lemwells

When compasses were invented, the direction of flux travel inot and out of their respective poles was unknown, not even imagined. Which end of the needle was called North was simply a matter of naming it. Fast forward many years. Physisists decided that magnetic flux travels from positive...

I finally found a reference, complete with formulas and fundamentals on the Knovel site. For those who may be interested, enter Knovel, go to Electrical and Power Engineering, then Electrical Devices and Equipment, then Handbook of Small Electric Motors by Yeadon, W. H. and Yeadon, A. W. As...

electricpete, the magnet poles are in opposite directions and they are indeed being attracted and repeled from the center of the flux feild. As one is repeled from one feild, the other is attracted to another feild so that they both move in the same direction. Once you gave me the idea, I drew...

You're half-right IR, if you reverse the poles they attract each other.

Right, a charge as measured passing a point is current in Amps or Coulombs per second. An A*m is a Coulomb*meter/sec or the velocity of a charge multipied by its magnitude.

Ok, I thought a magnet was a volume of charged particles. Am I stuggling with a gross missinterpretation of something I learned in physics? My kingdom for an electrical engineer!!!!

I just noticed a typo, in the 6th line from the bottom, I wrote "force", I should have written "charge velocity"

The permanent magnets are indeed positioned so that their "at rest" positions are in the gaps of the e-cores. I'll try this ( E:3 ) , if the E and the 3 are the facing, e-core electromagnets, the two dots of the colon are the two permanent magnets. I have found the following vector equation...

Thanks fsmyth, I've been surfing and continue to do so. I guess I'll do a search on rotors, too. electricpete, there are no rotating parts in this assembly. There are two e-core electromagnets facing each other. In the gap between the two faces are a pair of permanent magnets suspended by...

The magnet's oscillation is used to power a diaphragm pump. I need to improve that pump and the motor is one place where that's possible. I just cant find my reference and thought maybe an online forum of likeminded people who would be willing to help. Sorry, no test.

I know this is a basic question, but I cant find an answer in literature that match the units I have measured. I have a magnet whos strength is measured in Gauss. I have a set of electromagnets with known number of turns, size of wire, AC voltage and current. The electromagnets face each...