[Amps] plate choke

[R.Measures]

On Aug 26, 2005, at 6:22 PM, Michael Tope wrote:

> ----- Original Message -----
> From: "Phil Clements" <philc at texascellnet.com>
>
>
>>> I have an Ameritron single layer plate choke in my old 811A
>>> homebrew amp. Maybe I will pull it out and try making some
>>> measurements on it.
>>
>> The measurements will only be valid if you make them with the choke in
>> place
>> in the amp.
>>
>> (((73)))
>> Phil, K5PC
>
>
> I just wanted to see if there was a parallel resonance
> at work in the working operating range (as opposed to
> a nearly pure inductance). Presumeably any parallel
> resonance will be there regardless of whether or not
> the choke is in the final operating configuration, but
> perhaps shifted a bit in frequency. Now that you mention
> it, however, it is probably just as easy to measure it
> installed in the amp.

I once made the mistake of not measuring the resonance when the choke 
was installed.  The result was a choke fire on the low end of 20m.
>
> 73 de Mike, W4EF....................................
>
>
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Richard L. Measures, AG6K, 805.386.3734.  www.somis.org