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Modeling with Marx HO! Input needed on Converting 9 volts to 4.5, Short Haul model

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Hello, so recently I bought quite a Marx Train Set I bought it to use for this for this Upcoming Holiday or Christmas Season, I was hoping to operate it with a 9 volt rechargeable battery in the controller, for Improved Efficiency and for longer operation, I was wondering, since the model runs technically off 3 volts as I've had Experience with Electric Motors that run excellently off of 3 volts In O-27 that are also by Marx, I'm wondering how would I drop voltage without loosing current for this 4.5 volt motor and not stressing the motor out? how many of what diodes would I need and of what specific Type --- Thanks!




Edited by Max's Model Railway
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