@MR_P posted:I've found these to be useful, from Amazon, 2 ampt to peak 3 amps.
I'm sure there are others out there but I got thes 6 for 2$ each...
These buck converters are to large for the limited space in most S gauge American Models diesels as are most buck converters, they may be useful in American Flyer or in steam engine conversions as you can see below.
Ray