Re: Hysteresis Brake

--- In CAD_CAM_EDM_DRO@yahoogroups.com, David Speck <Dave@...> wrote:

>
> Earle,
>
> Neat idea! I might add that a source of cheap (as in free) shaded pole
> AC fan motors is defunct microwave ovens. Pick them up at the curb on
> trash day, or at the local recycling center.
>
> The little transformer on the oven control panel usually has a diode
> bridge and filter cap, and might have just enough current output to
> drive the brake. Can't beat free for that, either!
>
> Dave

The transformer on the one I checked out was a 2kv secondary. a tad
too high for much of anything. I have heard that someone had used
high voltage for metal erosion. Never found any other information on
that though.

lots of switches, great find.

a work light. (don't overlook the odd things.)

On one, I pulled an SCR, another had some 15 amp relays on the control
board.

High voltage wires, possibly a timer.

Dave