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The Air trimmers are my choice. I will try one of thoses : http://www.surplussales.com/Variables/VariableTrimmers/VarTrimm5.html and maybe try to build the second example given by BradtheRad ( **broken link removed** ). What do you mean, the Q Factor of this home-made capacitor can be?
thanks a...
Thanks for your reply,
I need:
Q > 400
price < 20$
pulling range : one from 10 to 100pF and one from 50pf to 200pF
temp stability : I will use it at room temperatur
What initial error at room temp : resonable
regards
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There are Crystal Oscillators (XTAL) that are variable?
Greatings,
I need a variable capacitor / trimmer. I tried many different types and they where all of low quality. Do you guys know of a company that produce trimmer for around 20MHz approx. that has a high Q / low losses? I need one from 10 to 100pF and one from 50pf to 200pF that have linear...
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