Re: Bridge Rectification

Wally K. replys;

This type of setup is used to see first if the motor is dead. Second
to get a rough idea of its RPM. As long as you do not put much more
voltage on it than its nameplate rating you can not hurt the motor.
Unless you put a load on it you will not draw rated current.

So if you enjoy watching it spin go ahead and buy the bridge
rectifier.

--- In CAD_CAM_EDM_DRO@egroups.com, jmw@c... wrote:
> More C&H. The motor crew was testing DC motors using an AC variable
> transformer and a little half-ice-cube sized "bridge rectifier"
with
> four lugs--2 in and 2 out. Cost was two or three bucks and the
> counterman claimed, "Ya can pull 40 amps thru these things."
>
> Is this a reasonable setup for motor testing, and one unlikely to
> release magic smoke? By reasonable, I mean is power of this quality
> similar enough to that of a "real" power supply as to render
> meaningful tests?
>
> Heck, I happen to have a variable transformer and for three
> dollars ...
>
> Thanks.
>
> --Jack