[sdiy] dare I say - decoupling?

[Antti Huovilainen]

On Sat, 3 Sep 2005, Magnus Danielson wrote:

> Just tossing it into the feedback loop of an op-amp will not help to acheive
> the constant DC-pulling.

However, you could add a lowpass filter in the op-amp input. Depending on 
the circuit this may help (no abrupt transient to cause EMI) or not (panel 
controls wired to power supply).

Please keep up the discussion. Bypassing and grounding seems a lot like 
black magic - I haven't been able to find any definitive rules like "Do 
this" and "don't do this".

Do you (or others) have ideas what to do when the circuit uses several 
DACs so you just can't "tie analog and digital grounds together at one 
point near the DAC"?

Antti

"No boom today. Boom tomorrow. There's always a boom tomorrow"
   -- Lt. Cmdr. Ivanova