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constant voltage
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  1. O Scale
    Lionel has some instructions here http://www.lionel.com/ForTheHobbyist/GeneralTipsAndFAQs/TechTip3.cfm#ControlSystem for modifying O-27 switches for use with a constant voltage like the O gauge 022 switches. However, if you follow their instructions, it is likely you will fry the coils in the...
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