12in Straight Re-Railer with Insulating Gap, G Solid Brass Track. A rerailer helps to keep cars on the track as they pass over it. It also assists in alignment of the wheels when setting cars on the track. This re-railer includes a factory installed diode for use with a reverse trolley system if desired. The diode can be removed if desired and the rerailer becomes an insulated track section for use in a block system. You can also bypass the diode and use it as a standard rerailer (same as ART11350).
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A diode is a one-way check valve for electricity. Depending on wich direction the diode is installed it will prevent the flow of electricity in one direction or the other. A diode may be installed in your locomotive headlight circuit for example. This allows the headlight to illuminate only when the locomotive direction is forward. If you were to remove the diode from the headlight circuit and re-install it backwards, the locomotive headlight would only light when the locomotive is reversing. If the diode were to be removed and/or bypassed the locomotive headlight would stay on whenever the locomotive is in motion.
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