Re: (ET) one blade not cutting well

[David C Robie <mycroftxx1 juno com>]

For years I have done this with either a 1 ohm or .1 ohm resistor in
series with AC line stuff to get actual current draw. Works with DC too,
applied voltage doesn't matter, it's the drop across the series resistor
that you work with.  Use ohm's law to figure amp draw.  I=E/R

Dave
Weymouth MA





On Wed, 26 Jul 2006 09:35:41 -0400 Klein Robert W NPRI
<KleinRW Npt NUWC Navy Mil> writes:
> You could also remove the top caps from the mower motors and install 
> a shunt on one leg, reading with a generic VOM Meter.
> 
> Robert W. Klein II
> SSGN Deputy Technical Manager AWS/AWSS
> 1176 Howell Street
> Newport, RI 02841
> Phone: 401-832-1948
> Toll Free:  1-800-669-6892 Ext. 21948
> FAX:  401-832-7877
> e-Mail: kleinrw npt nuwc navy mil
> 
> 
> -----Original Message-----
> From: elec-trak-bounces cosmos phy tufts edu 
> [mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of steves
> Sent: Tuesday, July 25, 2006 6:43 PM
> To: Elec-trak cosmos phy tufts edu
> Subject: Re: (ET) one blade not cutting well
> 
> 
> Most clamp-on meters are AC, but they make AC/DC clamp-ons too. They 
> use 
> a hall effect probe and are very accurate though you need to set the 
> 
> zero periodically (like old-time ohmmeters). They are also 
> considerably 
> more expensive than AC only meters - $80+ (even on ebay). But very 
> handy....
> 
> _ SteveS
> 
> 
> David C Robie wrote:
> 
> >How the heck are you gonna get a clamp on meter to read DC?    I 
> have an
> >old fashioned handheld  'generator and starter'  tester that reads 
> the 
> >magnetic field through a DC wire, but it is not accurate. couldn't 
> >discern less than 5a or so difference.
> >
> >Dave
> >Weymouth MA
> >
> >
> >  
> >
> 
> 
> _______________________________________________
> Elec-trak mailing list
> Elec-trak cosmos phy tufts edu 
> https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
> 
> _______________________________________________
> Elec-trak mailing list
> Elec-trak cosmos phy tufts edu
> https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak
>