Improved loco running with
DCC by adding Capacitors
The Movie shows the steam loco running over a piece of tissue paper over the tracks
simulating real dirty tracks. The reason it is able to do this is because there is a bank of
capacitors in the tender providing power to the decoder when the voltage from the track
is lost. Even better performance can be achieved by using a DC-DC converter which
could use the complete energy stored in the capacitor.   
Movie