[DMCForum] Re: Andrew's second dumb question of the evening

["Matt Spittle" <mds328@xxxxxxx>]

No harm in asking.  I'm certain that's how little kids learn so fast;
by asking lots and lots of questions.  

Matt
#1604


--- In DMCForum@xxxxxxxxxxxxxxx, Andrew <aos+yahoo@xxxx> wrote:
> On Tue, 3 May 2005, Matt Spittle wrote:
> 
> > Learn to use your meter :)
> >
> > You cannot check resistance when there is a power source in the
> > circuit.  I believe the way that it checks the resistance is by
> > applying a very small voltage across the two leads and then measuring
> > the current that is passed.  When you have another voltage source
> > "live", it will throw off that reading.
> 
> Okay, makes perfect sense.  I'm a dumbass.  :)  (Hey, I warned you
in the 
> subject line at least.)
> 
> I'm ashamed to admit that I've used ohmmeters for at least 20 years now 
> and never once stopped to think about that.
> 
> Thanks for clarifying.  :)
> 
> -andrew

---

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