> Ashley Wright wrote in message
>
> >
> > Well I don't work for cityrail but I can fill the gaps.
> >
> >C = Six car stainless steel suburban, Chopper controled
> >
>
> Sorry for being ignorant, but what does "Chopper controlled" mean?
>
Chopper control is a means of varying the wave form of the power going
into the motors, it is basically a DC source that is pulsed and the top
of the wave form is cut of to a different degree depending on how much
power is to be feed to each motor.
This isn't a full technical insight but should answer the question. :-}
-- Bye for now, Eben.