I have an electronic transformer which is meant to be used to drive a 12v halogen light. The specification on the electronic transformer box says 220-240VAC input, 12VAC output 20-60W.
When a 50W halogen bulb is connected to this electronic transformer the voltage across the bulb is approximately 10.5VAC.
Is there a way of using these low cost electronic transformers to supply power to a small single board computer?