The wall-wart battery charger for one of the kid's toys gave out, and I'm looking for ideas to replace it. The toy is powered by two 6VDC batteries; the wall-wart charger says "output 12VDC 1.2 amps".
Continuity tester says there is no circuit between the charger and the blade connectors at the end of the wires.
I thought I re-purpose a computer power supply for the task, but output of the power supply is 12VDC 12 amps. So I'm trying to apply the reading I've done on this: can I simply put a potentiometer inline and dial current down to 1.2 amps? Does the potentiometer or a resistor change the amperage but not the voltage? (The reading hasn't been too clear on this point.)
I'd appreciate any knowledge imparted, or links to a good source of info. Thanks!