Hi all, I'm trying to play around with coils and I could use a bit of help
Does duty cycling DC electromagnets save on power like an LED, or do their inductive properties make it more efficient to supply a constant voltage?
On a similar note, if I wanted to fire off some coils sequentially using something like a demultiplexer with a BJT or MOSFET, would I have to have a separate transistor for every coil or is there a way of using one between them?
The coils will be quite small as what they are moving will be light, they will probably be a a few cm in diameter, 30-40 turns of thin wire, 0.5A at 12v. Does that sound like a sensible set of parameters? Could I simply buy a demux that will handle that?
Essentially I want to be able to create a simple animation using a matrix of electromagnets pulling things around, and the way I need to do it means its not quite right to use just one coil mounted on some mechanical fixture for example.
Thanks!
Does duty cycling DC electromagnets save on power like an LED, or do their inductive properties make it more efficient to supply a constant voltage?
On a similar note, if I wanted to fire off some coils sequentially using something like a demultiplexer with a BJT or MOSFET, would I have to have a separate transistor for every coil or is there a way of using one between them?
The coils will be quite small as what they are moving will be light, they will probably be a a few cm in diameter, 30-40 turns of thin wire, 0.5A at 12v. Does that sound like a sensible set of parameters? Could I simply buy a demux that will handle that?
Essentially I want to be able to create a simple animation using a matrix of electromagnets pulling things around, and the way I need to do it means its not quite right to use just one coil mounted on some mechanical fixture for example.
Thanks!