i am working on split power supply (5,12,-5,-12v) , that i am going to use for general purposes
i used :
12-0-12 about 1A transformer
2A bridge
7805
7912
2x2200u 16v
for testing the circuit before soldering
i had about 12v on the 7805 o/p and about 0.78v on the 7912
also...