[Amps] Checking Plate Choke resonance

[Carl]

----- Original Message ----- 
From: "Bill, W6WRT" <dezrat1242 at yahoo.com>
To: <amps at contesting.com>
Sent: Tuesday, October 13, 2009 7:24 PM
Subject: Re: [Amps] Checking Plate Choke resonance


> ORIGINAL MESSAGE:
>
> On Tue, 13 Oct 2009 09:53:00 -0700, Vic K2VCO <vic at rakefet.com> wrote:
>
>>
>>I don't see how a parallel resonance would hurt, since it would create a 
>>very high
>>impedance, which is desirable.
>
> REPLY:
>
> The parallel resonance is accompanied by very high circulating current in 
> the
> choke. If you think about it, your pi-network is also a parallel resonant
> circuit with high circulating current even though it is loaded by the 
> antenna.
> The RF choke has no such load and the circulating current is even higher. 
> Since
> the RF choke is normally wound with small wire, smoke will soon follow.
>
> 73, Bill W6WRT
>

No load, no current, except for DC

Carl
KM1H

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