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Thanks very much, Jerry
My questions are these:
1).What does the magnetic field look like in a flat coil? I thought of using Ferrofluid to view it in 3 dimensions but the wife has me on a tight budget.
2). Will stacking the coils (and connected in series) increase the magnetic field?
3). When permanent magnets are stacked, at what point (er how many) will adding more not increase the field? E.E. is is better to buy one 2"x2" rather than four 2"x.5"?
4). What is the best way to switch 300vdc @ about 50ma?
5). And lastly, when a flat coil (or any coil)is de-energized, the magnetic field's polarity changes is that correct?
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