Amps
[Top] [All Lists]

[AMPS] basic question about dipping the plate

To: <amps@contesting.com>
Subject: [AMPS] basic question about dipping the plate
From: 2@vc.net (measures)
Date: Sun, 22 Apr 2001 17:37:10 -0700
>
>I like my answer better.  Because it answers a basic question in a basically
>correct way.
>
>Besides, where do you get the idea that an L network at resonance is a dead
>short?
>
?  In an L network, C and  L are connected in series.  For a series 
circuit to be resonant, XL must = XC.  This is a virtual short.  

cheers, Jeff.  
>
>----- Original Message -----
>From: measures <2@vc.net>
>To: AMPS <amps@contesting.com>
>Sent: Sunday, April 22, 2001 12:33 PM
>Subject: Re: [AMPS] basic question about dipping the plate
>
>
>>
>> >
>> >The output network becomes parallel resonant at dip and parallel resonant
>> >circuits have their highest impedance at resonance.  Off resonance, the
>tune
>> >cap and inductor look like shunts to ground and the tube has to try to
>work
>> >into a lower impedance...thus the high current.
>>
>> ?  Murphy said that things are more complicated than they look.  A
>> pi-network is two L-networks in series.  At resonance, an L-network is a
>> dead short.  Thus, L-networks are not oprated at resonance.  When my
>> SB-220 is tuned for max output on 3820KHz, a dipmeter shows that the tank
>> resonates several hundred KHz lower.  Pi-networks are not like parallel
>> resonant tanks in days of yore.
>>
>> cheers, Jeff
>>
>> -  Rich..., 805.386.3734, www.vcnet.com/measures.
>> end
>>
>>
>> --
>> FAQ on WWW:               http://www.contesting.com/FAQ/amps
>> Submissions:              amps@contesting.com
>> Administrative requests:  amps-REQUEST@contesting.com
>> Problems:                 owner-amps@contesting.com
>>
>>
>
>
>--
>FAQ on WWW:               http://www.contesting.com/FAQ/amps
>Submissions:              amps@contesting.com
>Administrative requests:  amps-REQUEST@contesting.com
>Problems:                 owner-amps@contesting.com
>
>


-  Rich..., 805.386.3734, www.vcnet.com/measures.  
end


--
FAQ on WWW:               http://www.contesting.com/FAQ/amps
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com


<Prev in Thread] Current Thread [Next in Thread>