My son and I were given an old set of Safetrans crossing signals with the relay box and a diagram to power it via a 6 volt battery. This has worked OK, but the battery drains pretty quickly. How would I go about powering this from a regular 120 volt home plug? Is there a transformer that would work? Thanks for any advice!
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You can use a toy train transformer and one of these. Don't use the original flashing mechanism.
I did something similar for mine.
The battery and a battery charger hooked up to charge when not operating?
Otherwise, a transformer (what’s the max voltage that can be used?) and rectification and a large capacitor.