Recent content by Tim in NY

Thank you Baluncore! Your coil design process was really well written and right on target. You confirmed what I already knew about designing a coil, however my questions are regarding how to design the outer iron 'shield', in conjunction with the coil, to optimize the magnetic field strength...

I understand about the instability and that's okay. I found something that is very very close in principal to what I need. It is the type of magnet used to keep Foucault Pendulum displays moving. It consists of a disk attached to the cable (near the cable's attachment at top), and a...

Yes, the donut steel or iron armature would have to be in two circular halves (that would be the only way to machine it) and the coil would be wound onto a separate round donut which would be glued into the half and then the two halves bolted together. The problem I'm having is that the field...

10 seconds would be too long...I would need something around ±2 seconds. Does the demagnetization circuit simply switch polarity?

Hi and thanks for a quick response! To answer your questions: I haven't designed the power supply yet, but was thinking 24vdc and sized to provide whatever current I need to get the forces I need. I didn't really mean "magnet iron", I'm going to use mild steel(A36) or ductile iron...any...

I have an electromagnet device that I am designing and need a bit of help from some of the brilliant people on this site. Here's the problem: I have a disk attached to the end of a shaft and the shaft/disk assembly can move radially (via a spring loaded mechanism). This shaft/disk fits...