[sdiy] filters, inductors & Q

[anthony]

----- Original Message ----- 
From: "René Schmitz" <uzs159 at uni-bonn.de>


> Hi all,
>
> I just wanted to add, that you shouldn't overlook the possibility of 
> winding your own coils. There are ferrite materials  (torroid cores) that 
> allow coils in the mH range with moderate wire gauges i.e. thick enough to 
> handle, and winding numbers , i.e. not requireing 1000s of windings. 
> Torroids also have the advantage of being more insensitive to external 
> fields.

I'd thought of that and I'll certainly be winding some coils. But I have a 
huge collection of coils. They may just donate wire (most of them I'm sure 
are only good for RF work anyway.).

> Cheers,
>  René