How about the current needed.
In general, the L7805 IC is the best solution, it can provide up to 1.5A (depending on package type), has internal overcurrent and overheat protect.
You will need only:
- 1 transformer of 7.5 to 9VAC output with appropriate current.
- 4 diodes 1N4004, if current not exceed 1A
- 1 cap of 1000uF/16V for the input pin of L7805
- 1 cap of 100uF/10V for output pin of L7805
- 1 cap of 0.1uF for the output of L7805
- 1 L7805 itself.
That is all.
Circuit diagram see from L7805 datasheet.
nguyennam