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Re: parallel capacitors

At 10:12 12/2/99 +0800, you wrote:
Hi,

Sometimes we use a big and small capacitors in parallel
for filtering purpose, for example in power supplies a 10uF and 0,1uF.
In theory, 10 and 10.1uF looks an insignificant difference.
Perhaps the small caps work better at high frequencies?

comments welcome

Jaya
infineon technologies

Horowitz & Hill's "Art of Electronics" carries numerous reminders
to provide 0.1 uF ceramics distributed over an integrated circuit layout.

Winfield Hill's practical bias helps one remember that short leads
on a ceramic placed close to each chip (or at most shared by 2 to
4 chips) helps avoid unwanted intermittant and hard to isolate power
problems by its low impedance path.




brian whatcott <inet@intellisys.net>
Altus OK