Flywheel/Encoder patterns
Todd Knighton
knighton at net-quest.com
Sun Dec 8 23:39:55 GMT 1996
Chris Morriss wrote:
>
> A neat and very reliable solution to taking up the backlash is to mount
> an eddy current brake on the shaft. Much easier than providing viscous
> drag. All you need is a plain aluminium or copper disk rotating in the
> gap of a horse-shoe magnet. Like a old electricity meter. (If you had
> the rotating disk meters in the US) The principle was also used as the
> speed control a#on the old but revered Garrard 401 record turntable.
Pardon my ignorance, but what effect does a magnet have on a non
metallic element like aluminum or copper.
How's it work?
And what kind of drag can you expect from such a device?
Todd Knighton
Protomotive Engineering
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