>
>> Therefore, a parasitic oscillation must be repeatable - even if for a
>> brief collection of oscillations. This definition would seem to
>> preclude random, non repeatable events - since they could not be
>> oscillations. And, if they are not oscillations, they could not be
>> parasitic oscillations.
>>
>> Colin K7FM
>
>There are two forms of damage Colin.
>
>One is caused by voltage breakdown, the other is heating.
>
>If the parasitic oscillation was a one time event that caused an arc,
>it could ionize an air path and trigger a sustained arc. That would
>only happen if there was something to ionize.
>
>The real flaw in all this parasitic nonsense is much or most of the
>damage is said to be heat related damage. That requires time, not
>just a sudden short burst of energy.
>
Gold sputtering with UHF current requires only that top layers of gold
atoms on the grid be boiled off. There is substantial evidence that
typical filter capaciors can supply the burst of needed energy.
>The amazing thing is the "power" to damage grids is supposed to
>appear with any grid current indicated on the meter!
Not an example of good reading.
>......
end
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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