In article ,
(Len) wrote:

you could try:
http://www.boten.nl/motoren/motoren_...lthandbook.pdf

Many thanks - it makes interesting reading, but I can't help feeling that
the solutions he offers are rather out-of-date when compared to the
electronic regulator available nowadays. Unfortunately, they are not
cheap! I just missed a suitable Adverc controller on eBay that went for
nearly UKP100, which is getting on for USD200!

Does anyone know of any published electronic regulator designs that work
well?

Regards,
Jerry