Distributed capacitance effects Q?
Distributed capacitance may affect single-turn coils differently from
multiturn-coils. And those vary as their length to diameter ratio
varies.
Mike wrote:
"Anything that increases capacitance will reduce component Q. I believe
he was quoting W8JI.
Mike also wrote:
"What do you think?"
In 1999 Tom Bruhns was experimenting, trying to find the relationship
between coil Q and parasitic C. He picked up reports that helical
resonators weere superior to short coaxial resonators. Tom also wrote:
"Reg (Edwards,RJE) then thinks the internal coil capacitance is just
femanding extra extra coil current and loss as the result of its cyclic
charge and discharge."
Reg seems to have had a nice explanation for coil loss from parasitic
capacitance.
Best regards, Richard Harrison, KB5WZI
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