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mstechca said:I buy and use fixed inductors. I don't create my own.
What value of an inductor is equivalent to 4 - 6 turns of wire?
I need to know in uH, so that I can choose the best inductor.
mstechca said:When I design a radio, I have two components to fudge with, an inductor, and a capacitor. Is it always better to use a lower value inductor and a higher value capacitor or a higher value inductor and a lower value capacitor?
I am dealing with the VHF band.
This is for the case where R is in series with the inductor. For parallel R, the equation is the reciprocal:Styx said:Bandwidth is related to the Q-Factor of a resonance cct
Q = Centre Freq / Bandwidth
Or
Q = 1/R * SQRT( L/C)
to be prurely theoretical
mstechca said:I looked at https://www.fcc.gov/mb/audio/bickel/oddno.html, and it seems that the bandwidth of an FM station is 200Khz wide.
When I use your formulas, it seems that the resistance must be less than 1 to achieve a 200Khz bandwidth. What does "R" actually mean in the equation? and why don't I use 2 and pi with the Q equation you specify?