Here is what I want to do. I have a series of blocks each at least as long as my longest train. If a train is in say Block C, I want to slow a train in Block B by changing the power to the rail from Terminal A at 14V to Terminal B at 5V. I also want to turn the signal light from green to red. Below is my diagram - apologies for the art work. I have not shown a capacitor because I am unclear on how to use. I also did only partial diagrams of Relay A and C.
So here are my questions
- I wonder whether instead of switching from Terminal A to Terminal B whether it is better to re-route the power through some resistors.
- Instead of using the bridge rectifier, should I get a cheap DC transformer, especially if I plan to use some LED lights down the road?
- I think for each block I need one DPDT relay, a bridge rectifier or a DC transformer, a capacitor, and some resistors if that method is preferred - can I get some part numbers from someone's preferred supply house?
Many thanks
