Re: [CAD_CAM_EDM_DRO] motor voltage

At 17:49 25/02/2003 -0500, you wrote:

>In a message dated 2/24/2003 12:45:36 PM Central Standard Time,
>tony@... writes:
>
> > You could do that if you had a means of measuring peak (as opposed to
> > average) voltage - e.g., if you used an oscilloscope; however, as the
> > Geckos are chopper drives, taking a voltmeter reading at the motor
> > terminals will give some sort of "average" voltage, over whatever duty
> > cycle the Gecko's chopper circuitry is delivering into your particular
> > motors.
> >
> > Easier to measure the supply voltage into the Geckos.
> >
>
>Yes, and Tony: I have found that some of the new digital voltmeters will not
>"average" the voltage of chopped DC, but "integrate" and give a reading
>nearer the PEAK voltage! The "old fashioned" analog meters had SOMETIMES an
>advantage!

Absolutely - I chose my words carefully - "some sort of average". The kind
of average you get will depend on the type of meter. I guess some meters
are more average than others... ;-)


Regards,
Tony