On Nov 21, 2005, at 4:22 PM, GGLL wrote:
> Please see below:
>
> Kenneth D. Grimm, K4XL escribió:
>> R.Measures wrote:
>>
>>
>>> On Nov 21, 2005, at 12:08 PM, wc6w@juno.com wrote:
>>>
>>>
>>>
>>>
>>>> Hi Jan,
>>>> The theory behind those "sectioned" chokes is that all the
>>>> resonances will fall somewhere friendly. In the real world they
>>>> tend
>>>> to behave rather similar to contiguously wound solenoids.
>>>>
>>>>
>>>
>>> In my experiences, this was also the case, Marv. The notion that two
>>> choke sections can be decoupled by placing them end-to-end instead of
>>> at right angles is quite laughable.
>>>
>>> cheers
>>>
>>>
>>>
>>>
>>>> For some background info on plate parallel feed RF chokes and
>>>> alternative solutions see:
>>>>
>>>> http://wc6w.50webs.com/wc6wamps/index.html?fr62.html
>>>>
>>>> 73 & Good afternoon,
>>>> Marv WC6W
>>>>
>>>>
>>>> -- jan <jan@on6zg.be> wrote:
>>>> Hi,
>>>>
>>>> I´m building a HF gs35b amplifier, but i´m having a problem with
>>>> the rf
>>>> choke in the High voltage line.
>>>> On 15meters the choke gets hot.
>>>> Has anyone got specifications for building a 160m to 10m rf choke?
>>>> I´ve
>>>> found several amps with a choke like this inside:
>>>> http://www.kvindesland.no/yl2qm/images/rfc.gif
>>>>
>>>> thanx for any help
>>>> ON6ZG, Jan
>>>>
>>
>> OK, now on behalf of us non-cognoscenti,
>
> Me, the first; that sectioned inductors, although not inductive
> related
> decoupled, are not wound in separate sections so as to reduce
> distributed
> capacitance?.
At the gaps, distributed C is reduced between the turns adjacent to
the gap, but the overall effect is minimal
end
>
> Best regards
> Guillermo - LU8EYW.
>
> are you guys saying that the
>> segmentation of a solonoidal plate choke cannot be wound so as to
>> avoid resonances at undesired frequencies?
>>
>> I don't want to waste my time trying to wind a new choke for my amp
>> that
>> does unhappy things every time I try to use it on 24 MHz if it is a
>> known fact that
>> segmentation doesn't work.
>>
>> Anyone want to guarantee this? :-)
>>
>> 73,
>>
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>
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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