Re: gEDA-user: basic anti-EMI design q

[Karel Kulhavy <clock@xxxxxxxxxxxxx>]

On Thu, Mar 23, 2006 at 11:03:44PM -0500, DJ Delorie wrote:
> 
> > The X cap would go across the +5V and ground. You would use two Y caps
> > -- one from +5V to earth ground and the other from ground (or return)
> > to earth ground.
> 
> Ok, someone tell me the practical difference between an X cap and a
> generic cap.  Note: no line voltages here; max 24 vac.
> 
> > This depends on the frequency you are trying to filter. I would think
> > you would be better off with a larger inductance. Something like a
> > few mH toroid.
> 
> I'll have to see if I can squeeze one in.  I almost forgot to put in a
> fuse!

If you cannot squeeze you can always make the device bigger. Or the
parts smaller by replacing with SMD or taking smaller form ;-)

CL<