locomotive headlamp reverser - addition to model train lighting

The generator described in our November 1982 issue superimposes a high-frequency alternating voltage (uL) onto the direct- voltage output (Up) of the power controller. Capacitors are used both at the output of the generator and at the input to the coach lamps to prevent the d.c. from the controller interfering with the lighting system. The composite voltage (uC) is applied to the input (A, B) of the reversing circuit shown in figure 1. This circuit ensures appropriate control of the reed relay in accordance with In our November 1982 issue we published the design of a high- frequency generator for the lighting of model railway coaches independent of the locomotive power supply. It occurred to us that this generator could also be used for changing the headlamps to the direction of travel on double-ended locomotives. locomotive headlamp reverser elektor december 1983 locomotive headlamp the direction of travel of the locomotive (which can, of course, be detected from the polarity of ...