power for spinning led's (dc motor with power transmitter)

"John Fields"

He originally said a "couple of amps" at 5V. That seems a fairly sizeable amount of power to inductively couple especially if doing it in small bursts.

Is this for a roulette wheel? Then you are going to have to pay for assistance with developing a money-making product...

in

I'll bet size and weight mattered a bit though. ;-) AIR, the OP said he wanted to drive 100+ LEDs. I'm really curious as to how large this device will be. Spinning large masses at 1800RPM is a considerable task. Well...at least without serious bodily injury anyway. ;-)

I'm thinking that 4000 pounds and 75' wingspan are taking up the slack. ;-)

Go to the local car recycler, get a car alternator, tear it apart, and use its field coil slip rings.

Good Luck! Rich

How do they make car alternators run for 100,000 miles?

Thanks, Rich

John, ya beat me to it! ;-D

Cheers! Rich

I wonder what he's intending to accomplish.

Thanks, Rich

Ah, Roulette for people with ADD

NT

Yes, I'd consider using one whole if only a few need to be made. Using those sliprings to transfer power, and the external alt shaft can be belt driven.

NT

Or at a meth lab....

Ehhhh.... Sliprings??????? Nahh...