Re: Re: Constant Current Drive - was: something else, can't remember.

> The resistor would be chosen so that only 1Amp can flow if left long enough.
> There is no 'extra' current; only a faster ramp-up time.

Forgive me my lack of electronic perfection when trying to explain, in as
simple a manner as possible, a technical concept to a non-technical user.

The "extra current" I referred to is the current in the coil at any given
time before saturation/limiting as a result of the faster ramp up.

Comparing the plot of coil current as a function of time for the same motor,
one with a low voltage, one with a higher voltage and a series resistor, one
will indeed see "extra current" at the beginning of the latter plot. At high
enough speeds, one will see "extra current" for all of the plot.


Alan

--

Alan Rothenbush | The Spartans do not ask the number of the
Academic Computing Services | enemy, only where they are.
Simon Fraser University |
Burnaby, B.C., Canada | Agix of Sparta