Need multimeter: Do inexpensive ones allow testing through insulatedwire?

[bw]

Guys, I'm done with this thread. Have fun, blast away.

Buh bye !! <wave>

 

[[email protected]]

   Yawn.  You won't live long with your stupid attitude about safety.

10 years to go before official retirement age. I reckon I'm doing ok
so far. Thanks for your concern.

 

[gearhead]

I have no worries about coming back and asking questions.

Look forward to hearing from you.

 

[Tzortzakakis Dimitrios]

Yes, these "Stud Finders" all have AC voltage detection now too. But not
as useful or precise (the range is very large) as the proper tool for the
job.

I still can't figure out how the wood detection works, the other two are
quite obvious. It works anyway. I haven't seen in any special shop (from
where I buy wholesale materials) any such tool of good quality, like a
fluke. Only the largest one carries a professional line of multimeters, I
don't remember the brand, but an european version of Fluke. I even measure
the leakage resistance of a heating element with the megohm scale of a
multimeter, and not with a Meger as it's *supposed* to be, FWIW, and usually
an earth leakage trips the main GFCI, anyway.

 

[David L. Jones]

I still can't figure out how the wood detection works, the other two are
quite obvious. It works anyway.

Stud finders just use the change in capacitance (due to different dielectric
constants) to detect the wood.
Pretty basic stuff and not much to it at all.
I layer out the board for and built one way back as a school project.

Dave.