Coils for ION ... still a bust somewhat

[kenkelly at lucent.com]

ignition Coils can be run in two modes:

1) standard ignition saturates the core and uses a high current 12 volts source.
It requires a heavy iron core to store the spark energy in a magnetic field.

2) Same coil can be pulsed with 300 to 400 volts like CDI systems.

I think there reference to smaller coils is because you don't need the heavy
magnetic core in a coil designed only for 400 volt pulse use.

		Ken

H. J. Zivnak wrote:
> 
> -----Original Message-----
> From: garfield at pilgrimhouse.com <garfield at pilgrimhouse.com>
> To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
> Date: Saturday, May 30, 1998 9:51 PM
> Subject: Re: Coils for ION ... still a bust somewhat
> 
> <snip>

> Also checked the Delphi Automotive page for specs, and again the COP coils
> are rated @ 12v. No indication if the secondary is isolated of not.
> 
> Maybe Mopar (or foreign other than Saab) has a 400v COP ignition with the
> necessary isolated secondary.
> 
> In theory, theory and practice are the same..... In practice they are not!
> 
> Joe