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Re: [Amps] Plate Choke Resonances

To: Amps reflector <amps@contesting.com>
Subject: Re: [Amps] Plate Choke Resonances
From: Larry Benko <xxw0qe@comcast.net>
Date: Sun, 31 Jan 2010 00:11:50 -0700
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Come on Bill.  No weasel words like "Tesla Effect".  That doesn't prove 
anything at all.  Just describe a schematic showing what you are 
claiming with values and I will be glad to simulate it.  I certainly 
don't mind being wrong especially if I learn something in the process.  
This stuff is not that complicated and I'm sure others beside myself 
could learn something with an accurate simulation.

What is wrong with simulating a tube as a current source in parallel 
with a resistance?  The output matching network translates the desired 
50 ohm output to approximately the tube resistance resulting in maximum 
power output.  Obviously any parallel impedance represented by the plate 
choke does affect the output matching values.  This circuit does not 
allow Qs to be high enough to cause the plate choke to smoke with the 
ease you claim.

73,
Larry, W0QE

Bill, W6WRT wrote:
> ORIGINAL MESSAGE:
>
> On Sat, 30 Jan 2010 22:27:47 -0700, Larry Benko <xxw0qe@comcast.net>
> wrote:
>
>   
>> I just ran a simulation with a tube with a 3000 ohm impedance and 3000V 
>> peak AC on the plate connected to a 100uH plate choke at 10MHz. 
>>     
>
> REPLY:
>
> The problem with your simulation is that the voltage is held to a
> constant 3000 V. In the real world the "Tesla effect" will cause the
> voltage to rise far higher and that is what causes the smoke. 
>
> One real world experiment is worth a thousand simulations, IMO.  :-)
>
> 73, Bill W6WRT
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