Switches or relays?

[Jim Blackwood]

Normally that would not be the case, although it could be done. Usually one
lead of the coil primary will be switched while the other goes directly to
positive. There is no intrinsic advantage in changing the polarity of the
spark for a street engine, motorcycles have used this system for at least 30
years. A multiple discharge would have sparks going in both directions (AC).

Jim

-----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
Behalf Of Ron Schroeder
Sent: Tuesday, November 13, 2001 3:03 PM
To: diy_efi at diy-efi.org
Subject: Re: Switches or relays?


At 12:32 AM 11/9/01 -0800, you wrote:
<snip>
>** An analogy:  You seem to think the HV terminals are each the
>equivalent of a stick welder's welding rod.  Instead, one is the rod and
>the other is the ground clamp.  They trade off functions with every spark.
>
>--
>Ludis Langens

Hi Ludis,

I hven't really looked into Wasted Spark much but I have a simple question.

Does the drive to the primary trade functions too (reverse polarity) every
other firing?

Ron Schroeder
WD8CDH
E. E. S.
wd8cdh at bnl.gov
rjs at bnl.gov
ron at 112motors.com
631 344-4561 Day
631 286-5677 Nite

----- End of forwarded message from owner-diy_efi at diy-efi.org -----
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