I have an old Nokia phone charger lying around which I want to adapt for powering my breadboard/PCBs.
I was trying to find out how much current the charger was able to supply, so I connected a DMM across its leads and measured the current.
Now, I know that one is not supposed to measure a battery/power supply current by just connecting the leads (since the ammeter setting in a DMM effectively shorts out the battery/power supply) but use a load, what other method is there to measure maximum current?
Do I just use a small resistor(like a 10 ohm one) in series? I'm worried that that'll burn up the resistor and/or give a wrong reading.
I also have a USB cable that I could use with my current phone charger to power the breadboard, but as asked earlier - is there a risk of damage to the charger/DMM by directly measuring the current?