[ARC5] The BC-221 low frequency tank circuit puzzle.
Bill Cromwell
wrcromwell at gmail.com
Sun Feb 14 11:19:50 EST 2016
Hi J Mcvey,
Those 'other' caps are the very thing I was wondering about. Thanks for
saving us the time to look it up.
73,
Bill KU8H
On 02/14/2016 10:28 AM, J Mcvey via ARC5 wrote:
> I pulled up the schematis od the BC-221 and I assume that you are
> referring to item 1, 2 and 3 with 150, 2 and 10 pf ) a MAXIMUM
> combined parallel capacitance of 162 pf. This is from TM-11-300.
>
> Item 1 is a 150pf VARIABLE cap. 10.4 mH (tm 300 -11 says 10.1 mH)needs
> a 61pf cap to resonate at 200kHz. This should be in the range of the
> variable cap.
> Does that seem reasonable?
>
>
>
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