Gary Schafer wrote:
>
>Dare we say that a glitch can also be caused by a parasitic
>oscillation.
>
Along with several other well-documented possibilities, including
sporadic releases of gas into the vacuum inside the tube, microscopic
'whiskers' of metal inside the tube, stray hairs or insects outside the
tube, line voltage surges, intermittent antenna connections, lightning
protectors arcing over, photoelectrons, cosmic rays; and my all-time
favourite: "spurious renegade primary and secondary electrons".
That last quote was delivered with all the authority of the RCA Tube
Division!
The point they were making was: we don't know all the causes, but we can
protect our amplifiers against the *effects*.
--
73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek
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