[sdiy] Speaking of filters with coils...

[Tom Wiltshire]

On 3 Jan 2012, at 15:55, Ingo Debus wrote:

> 
> Am 01.01.2012 um 23:23 schrieb aankrom:
> 
>> I have 12 coils that were used as oscillator coils in a Kimball electric organ. I was wondering if these coils could be put to use in a filter circuit.
> 
> First thing would be to find out their inductance. Do they have two terminals, or more?
> 
> Ingo


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.