Hi
I want design a simple AC to DC base on following circuit but I don not know how obtain elements value for capacitors and inductor


What is correct value for them? Consider AC voltage is 15V and 5Amps
Thanks in advance
Also I want connect the out put of this circuit to following circuit, I found it on youtube to create a variable PSU

 

It depends on the maximum amount of ripple you would like at the final output.

 

Hi
I want design a simple AC to DC base on following circuit but I don not know how obtain elements value for capacitors and inductor
View attachment 318259What is correct value for them? Consider AC voltage is 15V and 5Amp
Thanks in advance
Also I want connect the out put of this circuit to following circuit, I found it on youtube to create a variable PSU
View attachment 318260

What is your maximum output voltage you want it to produce? Because you will need to supply the circuit at least 1.5 times its output. For example: for a 12V output, the DC input should be 18V.

 

What is your maximum output voltage you want it to produce? Because you will need to supply the circuit at least 1.5 times its output. For example: for a 12V output, the DC input should be 18V.

At least final output voltage must be 12V

 

Hi
why did you decided to use CLC filter? For values you specified it's much beter to use LC filter or even C filter

 

This is all you need.

 

If you are putting a linear regulator after the bridge/ filter, the filter does not need to be very good, the regulator will take out nearly all of the ripple, as long as it is above the dropout voltage if the regulator. I have never used an inductor (other than the transformer) in a DC supply.

 

Hi
why did you decided to use CLC filter? For values you specified it's much beter to use LC filter or even C filter

I decided base on this image:
CLC is smoother and also it is near pick voltage.

 

But do you realise how large and expensive the inductor will be? Probably more than half the size of the transformer.

 

We said it once. We said it twice. We said it trice. See posts #5, 6, 7.
More than a billion power supply circuits were designed this way. They can’t all be bad.

 

I decided base on this image:
View attachment 318290CLC is smoother and also it is near pick voltage.

Those pictures are for the very beginners. Just a pictures.
In your case, as it was said, LC or C. LC filter is useful as a smaller transformer can be used. In other hand, choke is a bulky and heavy component.
Ripple value depends on how big capacitor and inductor are. Also depends on their ratio. Also transition processes depend.
Study the theory. For a technician, the theory is more attractive than a love novel

 

Consider AC voltage is 15V and 5Amps

At least final output voltage must be 12V

For these conditions, you don't need any elaborate filtering.

Using a bridge rectifier with filter cap, you'll have 18-19V on the filter cap. It will need to be large for an output of a couple amps, but the regulators will have sufficient headroom for a maximum output of 12V.

I want connect the out put of this circuit to following circuit, I found it on youtube to create a variable PSU

When you see schematics drawn like that, run away as fast as you can. Don't let them monetize your time with junk like that. If I drew something like that, I'd be too embarrassed to take "credit" for it.