[sdiy] PCB layout question
ijfritz at comcast.net
Sun Nov 2 13:25:05 CET 2008
At 12:53 AM 11/2/2008, Paul Schreiber wrote:
>>Afraid you have the wrong Paul here!
>>It's Paul S who has the the degree and
>>- more importantly - 40 years or so of experience.
>Well, more like 35 years but so does Mr. Fritz :)
Most of what I know I learned from ELECTRONOTES. I didn't take any
electronics in school. It's all black magic to me!
I've always been light on bypass caps. But I have never been able to solve
any problem by adding more bypass. Mainly problems seem to come from
capacitive coupling and sometimes ground loops. In a VCO I like to run
separate PS lines to the low-level and switching sections, decoupling the
two sets with beads or RC networks at where the power enters the
board. Sometimes ground planes seem to make thing easier -- I guess that's
a kind of bypassing, isn't it? :-)
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