Re: [CAD_CAM_EDM_DRO] Bridge Rectification

jmw@... 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?

To answer all your question, it won't cause HARM to the motor.
So, if you mean to tell a bad motor from a good one, it is OK.
If you want to extract enginnering specifications from a motor
lacking sufficient nameplate data, it won't give you accurate values.

Jon