Iam going to make a DC power supply....
I have a 220V (rms) to 20V (rms ) A.C step down transformer with 3.5A rating.
My power supply will have following features:-
1. +5v (D.C) (LM 7805 IC)
2. +0 -- +15V [variable] (D.C) (LM 317 IC)
3. +0-- -15V [variable] (D.C) (LM 337 IC)
5. 18.5V...