@Zildjianmeister68 posted:... If running only fastrack and two separate loops are separated with the block track/sections; can a transformer be used on one loop with the conventional train and a DC adapter on the loop only running LC? I know mixing AC and D.C. power is a big no no shared.
I tend to think that this could cause issues when a train passes from one block to the other. The pick-up rollers and collectors in the locomotive and some cars could create a short between the two power supplies potentially creating a 18VDC offset to the AC voltage from the other transformer.
I think a better solution would be to use a multi-output AC transformer or 2 phased AC transformers to power both isolated loops independently.