[sdiy] simple vcf

[KHeck73 at aol.com]

In a message dated 10/20/2002 4:09:11 AM Eastern Daylight Time, 
sasami at hotkey.net.au writes:


> Simply a ferite bead on a piece of wire - to filter out "spikes". Use a
> piece of wire if you can't be bothered with them.
> 
> Ken
> 
> >This looks ideal!  One question, what does "bead" at the V+ and V- inputs
> >mean, and how does it function?  Thanks for all the suggestions, great as
> >always!
> >Gavin
> >----------
> >>
> >>http://www.cgs.synth.net/modules/cgs35_syntha_vcf.html
> 

For ferrite beads on Ken's CGS and Tony's Oakley stuff, I've been using 
Mouser's part #542-FB73-226 (I'm in the U.S.). They're made by J.W.Miller and 
rated up to 40MHz. They are the same length as the body of a 1/4W resistor. 
Just stick a scrapped length of clipped resistor lead through it to mount it 
on the board. A little expensive at $0.38 each, but I figure it's an extra 
something the designer thought to put space in for, so why not.
-Karl.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20021020/01e14235/attachment.htm>