hi
ur circuit seems like dual output voltage regulator...but there is no feedback form
the final point to regulation circuit .... and there is no short circuit protection...
u drive the base of 3 parallel 2N3055 with 1N4148 its just small signal diode..
i dont no why use 3 diode in serial may be to cancel 1.25V for lm317
...and that resistor 27/1w .. u use here 10000uf its big value for power supply
work with batt
i prefer to use LM338 adjustable from 1.2v to 32v with 5A
**broken link removed**
* sorry, wrong drawing, 4148s are 4001 i want to be. They are for start from 0V not from 1.25V
* yes, is no feedback
* short-circuit protection may wait (if i use it carefully)
* yes, 338 is better than 317 (even 317+3055 here)
but i have this "source" and i want to modify for 2 functions (manual switchable): constant voltage/current