[sdiy] Patchell's modules

[karl dalen]

--- harrybissell <harrybissell at prodigy.net> wrote:
> Tom Arnold wrote:
> 
> > Another cool feature of the vocal filter, what other project could you
> order
> > bypass caps for by weight?? :-)
> 
> uhhh... on any of MY projects ???
> 
> (Jim and I agree on bypass caps 100% - we use one, per power pin, per supply
> voltage.  Sometimes I cheat a little bit and use one, every two CMOS chips...
> if they
> are used in straight logic circuit. Usually I don't cheat.  Decoupling caps
> are your
> FRIENDS !!!)

Only "if" power planes are low impedance.
If power planes are high impedance bypass caps are terrible enemies.
They worsen the cirquit behaviour. So always low impedance your 
powerplanes.

REG
KD

> 
> Also... I locate power traces and decoupling caps BEFORE any other parts on
> the
> board.  The layout flows around good power distribution... Not having the
> power
> distribution flow around the other circuits.  I'm not saying you should do it
> that
> way...
> I'm just saying "you should do it that way"   :^P
> 
> H^) harry
> 
>