Re: Stepper Dissasembly

Art,

Actually I didn't charge him. I felt sorry for him; he was up against
a deadline, was on a tight budget and hadn't used the drives before.
In all cases the exact same MOSET half-bridge pair had blown and the
drives were repairable.

I did suggest to him that if persisted with his particular set of
trouble-shooting skills without modification, he should apply as a
quality control inspector at a match company, (Yep, that one lights,
next...).

Mariss

--- In CAD_CAM_EDM_DRO@y..., "Art Fenerty" <fenerty@h...> wrote:
> Marris:
>
> True, I understand your point of view. But lets face it, it
wouldn't
> have hurt this guy to apply a voltage and just see what current the
windings
> sucked. No inductance bridge required. There's usually another way.
Being in
> electronics is like being a machinist, it's all about the little
tricks you
> learn. I wouldn't take apart a stepper in the RF drive of a Magnetic
> Resonance scanner, cuz I want reliability, but in a home CNC
machine, I
> wouldn't hesitate. (I hope you charged the gut for the stepper
drives. )
>
> Art