A throat controlled relay is ?
a DPDT relay used to set the polarity of the reversing loop based on the position of a turnout
or ¡°throat ¡° to following tracks. The fast acting ?relay takes the place of a sometimes finicky (and expensive) AR controller.?
You provide the relay. You figure out how to selectively turn it on/off depending on the position of the throw bar
of the turnout.?
Allan shows how to do this on his website using a 12Vdc relay and a diode with the relay coil wired from a Tortoise
or other stall type reversible ? turnout motor. The relay provides a fast polarity switch and greater amp capacity than other ¡®slide switch¡¯ mechanisms.?
