Information about CD systems -- two patents

[m_mcdonald at marx.ENET.dec.com]

> From: "George J. Murdoch" <100517.2176 at compuserve.com>
> Date: 21 Feb 96 19:46:02 EST
> Subject: Copy of: CD Ignition SMPS?

> I am interested in building CD ignition for driving 1 H.T. coil per cylinder
> using small coils similar to that used on the SAAB 9000 DI 16V engine
> I would be interested to know if anyone has any info on building a switch mode
> P.S. for the above and any comments on CD ignition in general .

> Thanks 

> George. 

A source of technical information about one CD ignition system is in the two
patents behind Autotronic Control's Multiple-Spark Discharge (MSD) boxes.

The numbers are 3,926,165 (December 1975) and 4,131,100 (December 1978).
Each costs $3.00 and is available after a 3-4 week waiting period from

Patent and Trademark Office
Washington, DC 20231
	
Marll McDonald   KB1AGM
m_mcdonald at marx.enet.dec.com