stan2004 posted:Agreed going the other direction up hill would apply full track power, but wouldn't the train eventually trip the top-of-hill sensor and lock in the track lower voltage until the train makes a complete loop and trips the bottom-of-hill sensor?
You are correct. This condition, although unplanned and annoying, does not matter. Since there will be no train on the grade when this occurs. When the same train or even another train trips the bottom-of-hill sensor, full power would be restored. And if a train should be going in the other direction (downhill), tripping the top-of-hill sensor again will still apply the reduced voltage.
Since the diode/rectifier circuit would be activated by that annoying condition, I thought that maybe prolonged periods in that state might result in some extra heat being generated by the diodes. However, with no train on that track section, the current draw would be minimal and I think that makes it tolerable.
Thanks for the feedback!