David
A frog juicer is the tech geeks expensive way of solving a problem that doesn't really exist and everytime it activates, the spark caused by the short will slowly but surely pit the rail surface and lead to dirt buildup and poor running. As has been pointed out in other responses here the situations where the polarity of the frogs have to be set one way or the other are easily defined and logix can be used to drive a turnout(s) to energise relay(s) to switch the correct polarity to each frog. It's very mundane doing it that way but far better in the long run. The same thing applies to reversing loops and triangular junctions where many people think a juicer is the only solution. In fact there can really be no justification for ever using a juicer.
Fraser
