thanks for all the answers!
Yes, I really meant 1 Farad as in those two-beercan-sized caps - not that I plan on using those; as I said it’s just an extreme example.
Kind of, but it was more like: “Would it do do any harm?”.
And that’s basically the core of my question - is that a fitting comparison? If I add 100000 teaspoons of salt instead of one, not only will it have a disgusting taste, but you will also die of salt poisoning by eating even a fraction of it.
My analogy would be more like having a recipe (for something spoiling very fast) for one person and just multiplying every ingredient to make it enough for 100000 people, while there’s still just me eating it. Aside from the enormous waste of money, space and work it doesn’t taste bad, it’s not toxic and I’ll only take my one portion and had enough.
1F could mean the regulator burns out on power being applied as many amps will flow for
significant time to charge the cap through the regulator.
So let me see if I got this right after some googling:
The higher the capacity and the lower the resistance to load the capacitor, the more current will flow. A higher resistance will lead to a reduced current and a longer loading time.
So if I “overdose” the capacity in combination with a low resistance to load, at a certain (high) capacity with a certain (low) resistance the occuring loading current will overload and/or fry something - right?
In practical terms, larger capacitors tend to have significant effective series inductance and therefore fail to “bypass” high speed transients effectively.
whereas using a 33 µF capacitor instead of a 10 µF will not be a problem at all.
So to sum this up:
There is no real mathematical procedure to determine the required capacity of decoupling caps for a certain component. Being based on empirical values, there is a debatable range of minimal/recommended capacities depending on several different factors; a couple of µFs more might or might not have a positive effect (other than providing a bigger power backup), but won’t do any harm. However at some point you’ll run into very high loading currents and a lowered effectivity in eliminating transients.