Circuit Project Electronic

1.2V-20V 10A adjustable dc power supply by LM338
A friend of me side radio amateur office. He wants Variable Regulate Power Supply high current about 10A go up. I then advise this circuit , because build easy. Use IC LM338 and IC LM107 again normal IC LM338 have current about 5A then must use 2 pcs. Make enhance current get be 10A besides. Still three fine VR1 make output modify since 1.2V to 20V cover usual usability sir. A friend of me has may glad that see circuit this idea. You may think like with that be lucky.