"Dave Platt"

So, using the figures Bill cited above:


** Test a REAL power outlet using a known load ( like an electric jug )
and measure the voltage drop at the pins.

For a 240V country, the source impedance is under 1 ohm so the drop at rated
( 10 amp) load is under 10 volts.

For a 120V country, the source impedance should be under 0.3 ohms, so a 15
amp load drops the voltage by no more than 4.5 volts.

In any case, it is the actual outlet voltage under load that counts and you
need to measure that too.

SMPS are usually rated for operation down to 85 or 90 VAC at FULL output.

The range of " 100V to 240V " simply means it covers the NOMINAL range of
all the world's AC supplies.



.... Phil