[sdiy] Speaking of filters with coils...

[aankrom]

Yes they were from top octave generators. That's a good thing to keep 
in mind. It probably also means they won't do what I want, meaning the 
inductance will be too low at least for some for a wide range frequency 
bank of filters. You could say oscillators & filters are apples & 
oranges, but they're still fruit. My experiments could still lead to 
pleasant surprises... I wonder what range the tuning slugs could give 
me. Probably an octave range or so if they used the exact same coil for 
each note... Probably less because the capacitor values change below a 
certain range of notes in the organ schematics. I wish I'd left one 
oscillator intact to play with. Actually, I still have all of the parts 
and did not completely depopulate the boards, so I could put one back 
together. Still, this may not help me much...

Anthony

> If the coils came out of an organ, they'll be for generating a top
> octave, right?
> So we could expect them to be designed for frequencies somewhere up
> around 4-5KHz (Hammond organ tops out about there). It just occurred
> to me that this might give you a ballpark to start in when trying to
> find the inductance.
>
> T.
>
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