@msp posted:... if I can use the transformer to power LED i am in good shape
this would be buildings that I add strip lighting to and others with lights already attached
To be clear, you can use a train transformer's Accessory AC voltage to power building LEDs as long as you have electronics in the building or external to the building to convert the AC to DC...and to adjust/reduce the voltage that the LEDs see.
In your photo, there is a small circuit board with less than $1 of components that performs this function.
If by "strip lighting" you mean those LEDs you get for a few pennies each on a roll, then those too will need some components. It's not that it's expensive or complicated to add the electronics but there are too many options to describe without more information. If you have a project in mind, post the specifics.
