Thanks to Bromley Libraries I've got my hands on a copy of the "Complete Book of Model Railway Electrics"/Roger Amos. After giving it a quick scan I'm quite astounded by some of the very simple, easy and workable ideas contained therein ... sidings protection being a case in point, took one look and thought "Doh!" why didn't I think of that etc etc ...
Anyway I was taking a closer peek at the circuit diagrams for pulsed width modulation controllers and thought "I can do that" however after a bit more reading it transpires that PWM controllers can fry motors, in effect giving great slow running, super smooth starts but only if you don't mind the smoke. :-)
baring in mind that the book is the best part of 20 years old I was wondering how well modern motors perform with this kind controller. If using a PWM controller a good idea generally or if there was a better solution.
Comments anyone before I commit myself to a trip to Maplins?