Model Railway Electronics

To many people I'm best known for the books I've written on the application of electronics to model railways. Here's a section on the subject.

Now that my books are out of print, I'm happy to publish here the two circuits for which I'm probably best known: the TEKTOR universal track circuit and the PWAyMan analogue controller. This was so named because it uses Pulse Width and Amplitude Modulation - you set the speed on the speed control in the normal way and a servo locks the train to that speed. Both these circuits are still being built and used around the world. Also included are some new circuits.

Commercial Notes

So far as I am concerned, anyone may freely build and use the circuits/models described here. Anyone may freely manufacture the circuit/model or a kit of parts for it and sell this for a profit. I am not seeking royalties. My only wish is to be credited as the original designer.


I am happy to discuss model railway electronics topics, whether or not they relate to the projects here or in my books. Just email me.

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© Roger Amos 2016