the output voltage can be minute adjustment .  it is very easy! add one suitable transformer. you will can built a Hi-end Linear Power supply.

Note:  The two MOSFETs IRF9Z24N need add heatsink. if just need small current. it also can be fixed at the the bottom of the aluminum chassis for cooling. if need current more than 2A. then need add extra heatsink.

if the heatsink and transformer power is enough big.the max output currect can arrived 8A.


 

we have the following voltage for choose:

1: DC3.3V    (recommned input AC7V)

2: DC5V       (Recommned input AC12V)

3: DC7V       (Recommend input AC14V)

4: DC9V       (Recommend input AC15V)

5: DC12V     (Recommend input AC18V)

6: DC15V     (Recommend input AC20V)

7: DC16V     (Recommend input AC21V)

8: DC18V     (Recommend input AC23V)

9: DC19V     (Recommend input AC24V)

10:DC20V    (Recommend input AC25V)

11: DC24V   (Recommend input AC28V)

12: DC28V   (Recommend input AC30V)