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robgraham robgraham is offline
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Default Low voltage lights.

On 24 Oct, 17:52, (Andrew Gabriel) wrote:
In article ,
* * * * "ARWadsworth" writes:





"Frank Erskine" wrote in message
.. .
On Fri, 24 Oct 2008 15:37:46 GMT, "The Medway Handyman"
wrote:


I have a digital multi meter from TLC
http://www.tlc-direct.co.uk/Products/TMM3800.html


I had to change some 12v 35w halogen lamps today & one wouldn't work. *I

set
the meter to 20v DC & tried to measure the voltage at the porcelain cable
connector. *Nothing.


Tried to measure the voltage on the one next to it, which was on at the

time
& still got nothing.


Is my multi meter broken or is a digital meter no good for this sort of
thing? *If the latter, what do I need to buy?


Try switching it to AC... :-)


Seconded.


If it's an electronic transformer, you still won't get an accurate
reading, as test meters aren't designed for ~20kHz AC and a grotty
waveform. You should get something somewhere between 6 and 18V though.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]


Yes - I tried measuring the output voltage of a single to three phase
invertor with a DVM and did guess that 600vac, or so, wasn't quite
right. A more modern DVM gave me 280vac and a traditional AVO 8 gave
240vac,

Rob