Measuring Current from DC-Adapter

[zug]

measuring current

Hi,
If I have a AC to DC adapter (12V DC) How can I measure how many Amps it is providing after the conversion? Would I need an ammeter and solder it 'in line'? Has anybody seen a AC/DC convertor with a built in ammeter?
Thanks,
Mark

 

[VSWR]

hall effect dc ammeter

You can add a 0.1 ohm resistor in series with the output of the AC/DC-adapter and measure the voltage drop across the resistor. The scale factor is 0.1 V/A, which means if you measure a voltage drop of 0.1 V across the resistor, the current is 1.0 A.

 

[biff44]

inserting an ammeter in series with the center conductor is the best way. You can get the male/female connector at a radio shack, and make up a jumper cable with the ammeter built in.

SOME handheld voltmeters can sense the DC current on the wire without splicing in. You need one with a hall effect DC current function.

 

[ark5230]

Please see if the following link serves your purpose
https://www.farwestcorrosion.com/fwst/instrum/swain07.htm
However a simple multimeter would serve the purpose of measuring current uless otherwise required.
Raoof