Have you figured how many joules of energy the amp will supply with a
plate circuit short compared to how much energy the gas tube will handle?
73
Gary K4FMX
Paul Hewitt wrote:
> Hi Gerald
> Eimac recommends the Siemens B1-C145 for the 3CPX5000. I believe Phil, K5PC,
> has looked for this and found it obsolete, not sure what he crossed it to.
> I'm using a Bourns 2035-09-B, (90v) for the lower drive amps and the 150 volt
> gaps for the two tube amps. Mouser stocks a wide selection of the Bourns
> discharge tubes, Mouser# 652-2035-09-B, (90 volt 20KA.) I believe I
> measured the internal capacitance of these gaps at 1-2pf.
>
> 73, Paul
>
> PAUL HEWITT
> WD7S PRODUCTIONS
> QRO HOMEBREW COMPONENTS
> http://home.earthlink.net/~wd7s
>
>
>
> ----- Original Message -----
> From: TexasRF@aol.com
> To: wd7s@earthlink.net ; amps@contesting.com
> Sent: Saturday, March 05, 2005 8:15 AM
> Subject: Re: [Amps] Alpha 77Dx -Adding Grounded Grid Filament Choke
>
>
> Hi Paul, please pass along the information about where to purchase these
> gas discharge devices and to get more info about them.
>
> Perhaps this is what we need for our mid size tetrodes used at 432 and
> 1296MHz for screen grid to anode flashover protection.
>
> Tnx/73,
> Gerald K5GW
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>
>
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