.1uf capacitor.

I wish to know the importance of .1uf capacitors at the input and output of regulator IC7805.Please help me.

Posted by Anonymous on 31/12/2004, at 06:17 GMT

1uf capacitor

Im no expert, just trying to figure things out.
However for lack of any other responses, I believe what the cap does is helps to smooth out the voltage from some high's and lows. Like a shock absorber I suppose. Also I have seen larger caps on the incoming power which can act as a big "spring" keeping preasure on the regulator. Anyone who can prove me wrong feel free. It would not take much. But I believe Im close to the answer.

Posted by Anonymous on 31/12/2004, at 14:49 GMT

why the 0.1 ?

The 0.1 uF takes out high frequency bursts of noise in the supply. The 100uF takes out the lower frequency noise.

Steve

Posted by steveastrouk on 25/05/2005, at 13:47 GMT