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Re: Dump the RSG!




From: 	Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: 	Wednesday, November 05, 1997 12:44 AM
To: 	Tesla List
Subject: 	Re: Dump the RSG!

Hi Jeff, all,
              This reminds me of something Kenneth Corum said in one 
of his posts.....

> From:   Jeff W. Parisse[SMTP:jparisse-at-ddlabs-dot-com]
> Sent:   Tuesday, November 04, 1997 11:56 AM
> To:     Tesla List
> Subject:    Re: Dump the RSG!
> 
> Richard,
> 
> I've got a pair of Seimens Triodes that are rated at 75kV -at- 2A -at- 50kHz.
> An engineer at Seimens says that they'll run at twice the frequency and half
> voltage with no problem.
> 
> These, of course, would make a nice tube coil (i.e. CW grid excitation via a
> primary feedback coil) but you are talking about using a device as a switch
> (i.e. short pulse grid excitation).
> 
> What's the goal in dumping the RSG? A big tube coil or a solid state switch
> that has similar specs as a RSG? The latter, I think we all agree, is not
> yet
> available at the Tesla coiler's budget.
> 
> But what about a tube coil in the 3 to 10kW range? I've got all the parts
> for a
> 3kVA TC (12.75" dia. secondary -at- 108kHz, .05uf CP cap, pancake primary,
> 100:1 potential transformer, 45A & 15A variacs, etc....). And I picked up
> these
> tubes at the TRW hamfest for less than the $100 price point! (tongue also in
> cheek).
> 
> Jeff

Here's a goal for everyone to beat :)  He spoke of a tube coil he had 
built that put out 3' at an average power of (3? 5?) kW.

Malcolm
<snip>