>Just having a quick look around slot car accessory sales and the old
>system of a rheostat is still the most common speed control. PWM seems to
>be regarded as new and innovative. These controllers are significantly
>more expensive than rheostats yet would be a simple project. Maybe
>there's some $$$ in this for you doing controller conversions ???

Think again. A rheostat will glow orange if the power is used for
experiments by enterprising youngsters. Semiconductors would not have the
same show effect and may lower the retail value of the product (e.g. 'that
c**p electronic speed control burned out immediately when I charged the
SLA battery with it - get the old kind, they don't make them like they
used to anymore).

Peter

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body