Re: LM78XX imput/output capacitors

On Thu, 13 Sep 2007 21:39:29 +0100, Eeyore
<rabbitsfriendsandrelations@xxxxxxxxxxx> wrote:



"vincent.thiernesse" wrote:

Hello,

these are minimum values.

the input capacitor doesn't replace the filter capacitor.

for the filter capacitor, take 1000uF per Ampere for 1 volt input variation.

I take it you mean ripple ? Your numbers are out by about 7-8:1

You need ~ 8000uF for 1V (pk-pk) of ripple @ 1A load and 50Hz.

---
8000µF?

If you want to be pedantic, ***, you might at least try to get
it right.


--
JF
.

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