R/C Servos for Model Railroading
Model Railroad Hobbyist 2009 July pg. 29 Scale: Category: "Track"
How to use, install, and control radio-control servos for throwing turnouts. Circuit boards are available to control these servos, and they can be used with DC or DCC controlled layouts. There is a side bar on resources for microprocessors needed to drive the servos, and a side bar on how servos work.