2 wrote:
>>>// Please name and explain some other causes of potentially fatal
>>>current surges, Mr. White.
>>
>>You appear to have forgotten that this very subject was discussed at
>>some length back in January/February.
>>
>// Alzheimers?
>
Nah... you're just not changing your memory backup batteries often
enough. Or maybe it's parasitic diodes in the I/O ports :-)
>>Here are a few quotes from the literature.
>>
>>"Although a very high degree of insulation between two electrodes can be
>>obtained... by modern high-vacuum technique, it is nevertheless possible
>>for this insulation to break down spontaneously and completely. This
>>phenomenon is known by various names, such as... the "Rocky Point
>>effect", after the American wireless station, which is one of several at
>>which it has been observed. ... Time lags [after application of
>>voltage] can vary between a few seconds or minutes to tens, hundreds or
>>even thousands of hours."
>>Gossling (British GEC), 'The Flash-Arc in High Power Valves', 1932.
>>
>// What of G.W. Fyler (Sept.,1935) article in the IRE Journal -
>"Parasites in Transmitters"?
>
We all know that parasitic oscillations can be a cause of current surges
(glitches).
My very simple point is that they are just *one* of several possible
causes.
73 from Ian G3SEK Editor, 'The VHF/UHF DX Book'
'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.com/g3sek
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