[sdiy] Ferrite Beads

[Harry Bissell]

I think that ferrite beads decouple, rather than couple signals together. Would you want a time delay
between two grounds... probably not.

H^) harry


----- Original Message -----
From: Matthew Smith <matt at smiffytech.com>
To: Stewart Pye <stewpye at optusnet.com.au>
Cc: Synth DIY <synth-diy at dropmix.xs4all.nl>
Sent: Wed, 02 Feb 2011 16:50:23 -0500 (EST)
Subject: Re: [sdiy] Ferrite Beads

Quoth Stewart Pye at 03/02/11 07:45...
> It's common (good practice) practice to put ferrite beads on the power 
> supply inputs to a module. Would it also be good practice to put them on 
> audio inputs to a system that uses banana sockets (unshielded cables), 
> or does RC filtering at your input op amp do just as good or better job?

Speaking of ferrite beads, I've been wondering about boards with both 
analogue and digital sections. The grounds of both need to be connected 
(at the DAC) - should this be a link with a bead on it rather than just 
being part of the same ground plane?


-- 
Matthew Smith

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-- 
Harry Bissell & Nora Abdullah 4eva