Re: Ignition coil tesla (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Fri, 02 Nov 2007 19:36:25 +0000
From: Simon Dodd <Simon@xxxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Ignition coil tesla

Thanks,

I am not getting any sparks from my secondary with or without the capacitors
connected. I am only getting 17 volts across the secondary coil and ground,
which is the same as the positive terminal of the primary.

Thanks for your help so far


On 1/11/07 1:57 pm, "Tesla list" <tesla@xxxxxxxxxx> wrote:

> 
> ---------- Forwarded message ----------
> Date: Wed, 31 Oct 2007 16:50:32 -0700
> From: Ed Phillips <evp@xxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Ignition coil tesla (fwd)
> 
> Hi guys,
> 
> I am new to this tesla building fun and have just finished construction my
> first coil.  However I have a problem.  I am using an ignition coil to drive
> the MMC and coil but I cant seem to get it to work properly.  The voltage is
> not stepping up at all from the input voltage. This is the coil I have built
> and everything looks fine from what I can see apart from the HV section.  My
> ignition coil only has one terminal on the output so I cannot connect it
> across the power supply in series with the MMC array.  Could someone please
> help me I am desperate to get sparking!
> 
> http://www.uoguelph.ca/~antoon/circ/hv/ss-tesla/ss-tesla.html
> 
> Thanks for your help in advance
> 
> Simon"
> 
> Do you get sparks on the secondary of the transformer without the capacitor
> connected?  Note that your capacitor really is connected in parallel with the
> primary via your C3.  I've used a similar setup to drive a coil with 0.0047
> ufd as the primary capacitor and found it dropped the transformer voltage down
> a lot but it would still jump a short gap [~3/32" as I recall] and I did get
> 4" streamers from it.
> 
> What is the spacing of your gap?  The idea of using a small wire for one side
> isn't right, not sure where it came from.
> 
> By the way, Tesla never lit any lamps at 25 miles.  Pure popular myth.
> According to his Colorado Springs Notes he did light a "small" lamp connected
> to a coil in a field a short distance [200'?]from his primary.  He did light
> more lamps than that when the coil was in the middle of the primary.  Normal
> coupling [inductive and/or capacitive] would produce those results.
> 
> 
>