I want to start off by saying I know nothing about model trains. My father in law is looking for a rheostat for his transformer and I am reaching out to anyone that may know what he needs. The specs for his transformer are below.
Input: 120VAC, 0.12Amp 60Hz
Output: 22VDC, 7VA
Hi Train Noob, and aboard!
Let's see, AC in, DC out. Sounds like what your father-in-law has has an HO transformer. Just guessing here with the information you've given. "Rheostat" was kind of trigger word as well, HO guys typically use that term.
Do you know exactly what kind of trains your FIL has?
If there's no hobby shops in the area that can give you advice you may want to ask this question on the "Model Railroader" Forum, that's "HO Central" over there.
The output of this power supply is only .3A, that will not run much. Second it seems to be a fixed 22V. HO trains usually use 12VDC maximum. I would recommend against using a rheostat when the transformer output voltage exceeds the maximum design voltage of the engine motor and and the car illumination.
If he has G scale trains the voltage is ok but the VA rating is not adequate.
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