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Resontate frequency of parallel L/C
On Sun, 18 Nov 2007 19:12:48 +0000, Dave wrote:
Brian Howie wrote: | | ! -----!----- | | | | L C | | | | R R | | | | ------------ | | | I ran it through Spice ( laziness) - It doesn't resonate. Intuitively you think it should have a low Q resonance at 1.6MHz , but it doesn't Nice one. 73 Brian GM4DIJ The trick is to make R = sqrt(L/C) then the impedance is real everywhere. You can use any old values for L: and C, as long as you make R=sqrt(L/C); That equation is obviously know from transmission lines too.. Hi Dave, Perhaps, but not in this round. sqrt(L/C) 1000 Besides, resonance is slightly above 1MHz. 73's Richard Clark, KB7QHC |
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