Re: Big bangs from MOT

• To: tesla-at-pupman-dot-com
• Subject: Re: Big bangs from MOT
• From: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
• Date: Thu, 29 Oct 1998 16:41:48 -0700
• Approved: terryf-at-verinet-dot-com

Hi Julian,

> Original Poster: Julian Green <julian-at-kbss.bt.co.uk> 
> 
> What do you think of this for a design that allows high voltage bangs
> when you only have a low voltage supply transformer.
> 
> Many coils employ multi gap static spark gaps.  So build a marks 
> generator.  String a few largish capacitors up in series with 
> single static spark gaps between the caps (Caps must be same
> type).   Then connect each capacitor up to the supply with chokes.
> 
> NOTE: view this message with a fixed size font.
> 
> 2KV--+-----------+-----------+
>      (           (           (
>      (           (           (
>      (           (           (
>   A--+--||-+-><--+--||-+-><--+--||-+--><---B
>            (           (           (
>            (           (           (
>            (           (           (
> Gnd--------+-----------+-----------+
> 
> 2KV supply - MOT.  No problems with series transformers and insulation
> breakdown.   For higher voltage add more caps, for higher power add 
> transformers wired in parallel.
> 
> When spark gaps fire capacitors are connected in series to generate a
> 6KV pulse between points A and B.   (Assuming spark gaps fire at 2KV)
> Connect tesla primary across points A and B, and tune up in the normal 
> way.
> 
> Martin: I havn't tried your capacitors out in this configuration, yet -
> perhaps 0.3uF it a bit big for a tesla coil.
> 
> Julian Green.

Several of us thought of this scheme a while back and I've actually 
tried it with two caps. The catch you have to watch for is the 
voltage the end chokes can withstand when the thing erects.

Malcolm
 

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