Rivesm posted:Got it ..... sorry .... did not think it through
Just to make sure as constant voltage could refer to a voltage that does not vary or an "always on" condition.
When there is no completed circuit (off) there is no power flow in the coil so it will cool.
I use a dedicated constant voltage power suppy (doorbell transformer).
With it, I use the Lionel under track pressure contactor (forget the #) AND a button to occupy any small fingers in need of entertainment. (could be phased (transf.) and used with isolated rail. I arrived at my combo by chance of convenience.).
The news stand with spot circling the fire hydrant is choice #1 for most kids. If you want the gateman to get less attention, consider that one too.
