RE: [CAD_CAM_EDM_DRO] Re: can amps be mixed with motors?

There are real fancy ones, which is what the academics would say to use,
bridge meters and all sorts of contraptions.

However a simple digital bench or hand held meter should be OK, depending on
what the value is.

You tend to find servo motor resistance will be anything from 0.1 ohm to
several ohms, but most of the ones you see on the smaller / DIY size CNC
machines are 1 to several ohms.

For these if your meter will display to 0.1 ohms that's should be good
enough.

If you have the specs for the motors, the figure is usually quoted as
armature resistance.





Dr. Mark Vaughan Ph'D. B.Eng. M0VAU

Managing Director

Vaughan Industries Ltd, reg in UK no 2561068

Water Care Technology Ltd, reg in UK no 4129351

Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
Phone/Fax 44 1872 561288

_____

From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of toolspindoctor
Sent: 31 January 2007 13:41
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: can amps be mixed with motors?



Dr Vaughan,

Can describe the parameters of a good multimeter to measure the
resistance on my motor?

Thanks





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