It acts like a fillter stops noise been fed through power and also as a
switch on choke.
Art
----- Original Message -----
From: Kieran Miller <kiermill@DTN.NTL.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Saturday, April 29, 2000 3:25 PM
Subject: [OT] Decoupling Query


> Hi Picsters,
>
> I know a little about decoupling and the theory behind it, but something
in
> the attached schematic confuses me. Why is the inductor L2 needed? I know
> why the two caps are there - but the reasoning behind the inductor is lost
> on me.
>
> Anyone care to enlighten me?
>
> The full schematic can be found at
> http://133.205.9.101/~elm/reports/mpc/mpc_c1.gif , and the decoupling is
on
> both the digital and analogue power inputs to U4, the DAC.
>
> Many thanks,
>
> Kieran
>
> --
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>
>