Which Components to use?

I want to make a circuit that is powered by 220v ac. It consists of a cooling fan that requires 12v, 0.7a, a  PCB with 10 LEDs in parallel that requires 0.25a, 3.5v and a single led that requires 3.5v,0.025a. I know how to calculate resistor values but it would be better if you give the values. I want to know which diodes should I use to make the rectifier and should I use a capacitor? In short, I want to know  how to set up this circuit, what components to use and their value and power ratings.

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iceng3 years ago
OK here are discreet components.
Ahtasham Ahmad Mohtashim (author)  iceng3 years ago
thank you! Can you please point out the 1,2 and 3 pin of LM 317(are they positive?) in the diagram? And also is the 470uf capacitor ceramic?

your average computer power supply should power it salvage one and use it.
rickharris3 years ago
At your stage of understand PLEASE BUY a suitable power supply, It isn't going to cost a lot and will be very useful in the future.