Transformers

[kenkelly at lucent.com]

Bruce,
	When you talk about a points ignition you use the coil in a
different mode than a CDI. In the points ignition you
saturate the coil core magnetically. When the points open
the field collapses and generates the spark. In the CDI
ignition you apply a short ~300 Volt pulse to the coil and
use it as a stepup transformer to create the spark pulse.

		Ken

Bruce Plecan wrote:
> 
> Other than ohms, and ratios, what is there to transformers?.
> Is there a breakdown voltage for insulation?.
> 
> This might seem off the wall but,   If one side of the coil's secondary
> is open (point side), and the other side is connected to a spark
> plug, how is there any flow of electrons with the one side open?.
> 
> With the one side open, but yet connected thru the coil to the+ side
> does that make the return path?.
> 
> The two books I got just say when the points open the field collapses,
> and generates a HV..
> 
> Cheers
> Bruce