[Amps] Parasitic Suppressor 4-1000A

[R at contesting.com]

Getting from series-R to parallel-equivalent-R is not as simple as it 
first looks.
--  see page 27, March, 1989 *QST*, "Calculating Power Dissipation in 
Parasitic Suppressor Resistors".

cheerz, Steve

On Mar 13, 2006, at 12:07 AM, Steve Thompson wrote:

>
>
> R; Measures wrote:
>>
>> On Mar 10, 2006, at 11:15 PM, Peter Chadwick wrote:
>>
>>> Steve said:
>>>
>>>>>    Adding L increases dissipation at 29MHz,
>>>>> decreases the parallel-equivalent resistance seen by the anode at
>>> its<<
>>>>
>>>> ..increases.. I think.
>>>
>>> It does increase the effective series resistance. Rs=Rp/[1+(Rp/Rs)*2]
> I think that should be ...(Rp/Xp)*2]
>>
>>
>> Indeed, Peter, and increasing series-R decreases parallel-equivalent 
>> R - ....
>
> Rp=(Rs^2+Xs^2)/Rs. If my rusty maths serves me, when Xs<Rs increasing 
> Rs
> increases Rp.
>
> Steve
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Rich Measures, 805.386.3734, AG6K, www.somis.org