Re: 12V Charger
Assuming it is a mains powered charger for 12V batteries, what are you measuring the 12V with? Are you measuring it whilst feeding the 10Ohm load?
If you're using a moving coil meter and the charger uses a simple rectified, non smoothed supply it may well still only show 11.5V when working correctly.
If it is very old 20yrs +, it may have a metal oxide or selenium rectifier (likely to be fairly big with 'fins' on) which has gone high resistance.
Dont forget to look for the obvious though - like it has 6V on as well as 12 and it's switched to the wrong setting, or it has a 'trickle charge' setting and that is switched in etc.
Last edited by Nicklyons2; 5th Dec 2014 at 7:56 pm.
Reason: Making sense of it
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