bertijo, you cannot run a DC motored locomotive directly on AC voltage. Some of the inexpensive starter sets of the past had DC motors and a DC powerpack. If you put those locomotives on an AC powered layout, the loco would not run, and you would eventually burn out the motor. To use a DC motored loco on AC, you need a rectifier circuit to convert the track AC to DC for the motor. This is what all the DC 'can' motored locomotives in the present have in them included in the electronic e-unit.
Larry
