schematic diagram power supply dual output, 12V & 5V

part list :

1. trafo CT
2. diode dual bridge, 2 pieces
3. capasitor 100 uF < 25 volt 4 pieces
4. capasitor 1000 uF <25V 2 pieces
5. LM7805
6. LM7812

note :
size of dioda can be appropriate from ampere of transformator