Hi everyone, I finished building this power supply with the three 2N3055 transistors version, but I couldn`t find 0,27/10W ohm resistor for R7 only 0,22 ohm but it works really nice, I measured the output current in short circuit it is adjustable from 0 to 11,38A ;D, but with the current setting trimmer it can be calibrated to a smaller output current, the minimum output voltage is about 50mV cannot be adjusted with RV1 not even if I replaced C7 with a tantalum capacitor. I had the same problem as some other guys, when the current limit pot. is turned to min. the current limit led lights up, I thougth if U3 is a comaparator on U3 pin 3 is the reference voltage for the current control, on pin 2 the voltage without a load was 10.6 mV, and when the current control pot. is at min. on U3 pin 3, I had 8.4 mV (the compared value was bigger than the reference value) from this voltage difference the led was lighting up, so I replaced the 33ohm R17 to 100ohm ;D (I don`t think I have to change anything else, correct me if I am wrong) so in this case the voltage on U3 pin 3 with the current set. pot. at min. is 11.4 mV finaly the led does not light up when the current set. pot. is at min. :), but in my case from the voltage difference between pin 2 and 3 on U3 the minimum adjustable current is about 4 mA, which I don`t mind. I designed a board in eagle and I would like to make a 7 segment volt and ampere meter using PIC, I`ll upload some pictures of my project soon...