[0-30 Vdc Stabilized Power Supply]

Here is a version modified for 36v ac

I have problem is that when i switch of the 230VAC supply from transformer the DC output voltage reaches maximum voltage.

please give me a solution.

[0-30V Stabilized Power Supply]

Shall I use TL081 instead of TLE2141 or MC34071

What are the changes need.

[0-30V Stabilized Power Supply]

I have doubt on transformer that the current ratting mentioned in my transformer is correct.
So I need to reconfirm it by testing.
I want to know the correct testing procedure of transformer.
For example explain with a 30V/2A.

Please help me to find out.

[0-30V Stabilized Power Supply]

Hai...

        I would like to design the same for a 0-30V / 5A power supply with the changes below.

        30V/5A transformer.
        2N3055 transistor 2nos parallel with Q4 and Q5 with same design.
        RV3 with 500K trimpot.

        Is it enough to make a 5A 30V power supply or please suggest a necessary changes.