I am attempting to create an electromagnetic propulsion system (and no it is not a perpetual motion machine I am not that thick) and for that I need an electromagnet capable of producing a very strong electromagnetic field, currently I am getting a moderately strong field however it is insufficient and I want to know if there are any ways I can increase the strength, I am using a MOT with the secondary removed.
I know that there are three main factors which influence the strength of an electromagnet, 1) Amperage 2) Coil Density 3) Permeability of the core
The core seem to be very permeable and its unlikely I can get anything better than that taking into consideration funds. I also can't really change the coil density
So I am mainly considering amperage and I used http://www.daycounter.com/Calculators/Magnets/Solenoid-Force-Calculator.phtml to do some calculations and it seems like this will definitely work but the trouble is I am currently (pun intended) unsure of how to increase the amperage as while I have connected a 400A power source to it, it obviously isn't absorbing even close to that and I estimate it is getting under 8A so my main question is is there a to make it absorb more amperage? I am not overly concerned about Overamping (not the drug one, the electrical one)as it is unlikely to instantaneously destroy it and I have a spare.