RE: SCR & PRIMARY CONNECTIONS (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Thu, 8 Nov 2007 15:28:05 +0000
From: "Lau, Gary" <Gary.Lau@xxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: RE: SCR & PRIMARY CONNECTIONS (fwd)

I don't believe that it's even possible to use an SCR in a Tesla coil.  SCR's are very slow devices.  And functionally, they're definitely not a drop-in replacement for an IGBT - they behave very differently.

Regards, Gary Lau
MA, USA

> From: Chris Swinson <list@xxxxxxxxxxxxxxxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: SCR & PRIMARY CONNECTIONS
>
> Hi all,
>
> I am replacing my IGBT based coil with a SCR, however the SCR is too big to
> place under the primary board. I am thinking of placing it ontop of the
> board and then it will be next to the primary...
>
> I am wondering if the RF off the primary will effect its operation ? The
> catch is, the SCR is on 2 large heatsinks which are the 2 connections
> anyway, so one side of the heatsink will be live with RF anyway (the other
> side ground). So I am wondering if placing the SCR next to the primary will
> actually be an issue ?
>
> My primary is 2" copper strap so placing the SCR ontop will make life easier
> for connections! So just checking if anyone has done anything along these
> lines and more to the point had any problems...
>
> Cheers,
> Chris
>
>
>