Scope pics...

[don.broadus at exeloncorp.com]

I would like to know where I can buy this magic coil (transformer) that when
you put DC on the primary you get stepped up DC on the secondary.
Furthermore this magic   DC coil running at 8000 RPM has a DC FREQUENCY of
532 HZ to Drive a DC tachometer indicating DC Revolutions per minute.
It seems like we are having the Edison / Westinghouse war of the currents
all over again

> -----Original Message-----
> From:	Matt S Bower [SMTP:m.s.bower at cummins.com]
> Sent:	Monday, November 13, 2000 3:15 PM
> To:	gmecm at diy-efi.org
> Subject:	Re: Scope pics...
> 
> 
> 
> Bruce Plecan wrote:
> > 
> > The output side of transfomer is A/C.
> > It's just that simple.
> > You can argrue and dance around things all you want.
> > Biased high or low, it's A/C  might be riding on an dc bias,
> > A DC spark is lightning.
> > If the plug was firing a DC voltage just one side would erode.
> > 
> Used to work on ignition development,  Current only flows one direction
> through the plug.  There are a lot of A/C components to the wave form as
> Bruce describes but the spark it self is always in a predictable
> direction with erossion mostly being due to the energy being focused on
> a finite point on the electrode and one on the ground strap.  These
> points are not consistant errosion and formation of the ion path but the
> erosion is spot melting at the point of energy transfer.  I have seen
> high energy systems completely slag plugs on the bench when people
> forget about the physical contraints of the material.
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