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Re: [Fwd: Re: Capacitor search]
In a message dated 96-12-06 01:37:36 EST, you write:
<< > Thanks, Ed Sonderman
>
> Ed, I did some off the cuff calcs on your numbers.
>
> Unloaded Resonate Frequency 908 khz
> Unloaded Q 93.67
> Loaded Q should be 41.63
> Inductance 7.034 millihenry
>
> Isn't your inductance a bit to low for this size
> of coil?
>
> D. Gowin
>>
Dan,
Thanks for your help. I did mean khz - not mhz. I calculate 493 turns using
#28 wire wound on a 3.0" dia bottle, 7.0" winding length. I assumed 97% x
72.7 turns per inch and then used 70.5 turns per inch in the equation. Using
Wheelers Equation, I get 6.5 mh and unloaded frequency of 974 khz and 654 khz
with toroid.
You asked if the inductance wasn't a bit low? Can you expound on this? If
you are going to use a wine bottle, that's what you get - unless I drop down
in wire size to something like # 32 which should raise the inductance by
about 50%
Ed Sonderman