Re: [CAD_CAM_EDM_DRO] motor voltage

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!

Jan Rowland


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