Ignition Coil Drive Circuit

[Michael F. Sargent]

MSD ignitions put out over 400 volts to the primary of the coil (really!).

Nice hot spark! Make arm move very fast!

	Mike

----------
From: 	owner-diy_efi at coulomb.eng.ohio-state.edu on behalf of Sandy
Sent: 	Tuesday, June 17, 1997 20:35 PM
To: 	diy_efi at coulomb.eng.ohio-state.edu
Subject: 	Re: Ignition Coil Drive Circuit

I was thinking of something similar, but decided that I would try to focus
on finishing off the EFI system first. A good place to start for 12V to
What ever supplies are in some of the mid priced Auto audio amps that has a
nice PWM supply, they put out a bunch of power, and have a nice case. I
have seen some pretty small ones in a magazine, that did something like 58
volts at 8 amps. It was not very large and looked prety simple.

Sandy

At 10:48 AM 6/18/97 +1200, you wrote:
>BTW, has anybody experimented with building a say 12V->24V 10A 
>dc convertor to power the coil with? Think of all that energy - arc 
>weld with your spark plugs :-) 
>
>The coil may need heatsinking though...  10A * 24V * .5 duty cycle = 
>120W - ouch!