I am working on a solution for a model train control circuit. I need to create an extremely small circuit that will take 12V-18V A/C input and convert it reliably to 11V-12V DC. Since it is going in the body of a very small toy, the components and circuit must be as compact as possible. This circuit will be married to other control circuits that require a clean DC input.
I have made plenty of rectified circuits before, my issue is purely size. What components would be best to achieve the smallest possible design?
Thank you in advance!