And why does it not short out the circuit?
I am referring to the capacitor placed between Vin and Ground in this schematic:http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=P180ACT-ND
I am basically copying this schematic for a similar brakoutboard I am building, but I dont really know *why* i am placing a capacitor there.
Is this a decoupling capacitor? From wikipedia:
One common kind of decoupling is of a powered circuit from signals in the power supply. Sometimes, for various reasons, a power supply supplies an AC signal superimposed on the DC power line. Such a signal is often undesirable in the powered circuit. A decoupling capacitor can prevent the powered circuit from seeing that signal, thus decoupling it from that aspect of the power supply circuit.
Is this whats happening? If yes, then why use a capacitor instead of a diode? (I realize the diode would short the circuit if connected in the same way as the cap, but why not just place a diode somewhere in the circuit instead of that capacitor?)
If someone could also point me to a hands on guide on how to use decoupling capacitors and when to use them, I would apreceate it. Wikipedia is a bit abstract, and I am allways reluctant trusting a random source on the internet that someone else has not recommended to me.