I don't, personally, use that one, so cannot describe it's operation.. mine does other stuff as well, it is used more for computor repairs than vehicle diagnosis, but is capable of both !! ... I was merely pointing out how cheaply they can be obtained.
Most do not select a specific voltage .... you select a "range" 1-6, 6-20, 20-50 or something similar. as well as a "type" AC or DC . To diagnose vehicle stuff select the appropriate range .. in the above example 6-20 DC would seem ok.
The one I linked to APPEARS to have 5 DC Volt ranges top left but I can't quite read the numbers
When choosing a range ALWAYS choose a high range and work down - saves blowing fuses !
With the range/type selected check the device ... you will read the "no load" voltage at the points .. a - in front usually means the polarity is incorrect, either you have the probes in the wrong place or the wiring is wrong !!
The more expensive devices usually a) do more ranges/operations, b) have better protection built in, c) are more accurate, d) are easier to read (size of screen/back lit etc) e) fancy makers name ?
You DO NOT need to be an electrician/rocket scientist/genius to use one .. common sense and a modicum of care will enable you to check/diagnose minor faults ... as well as ensuring the local idiot does not rip you off with mumbo jumbo.
just my 2.7 p's worth (inc VAT)
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Topic: Mobile phone charger fuse (Read 8048 times)