Power supply Circuit is very powerful and simple design has regulated for 6 TIP142 transistor used transistors fin cooler on the mounted 2 x 12v fan cooling provided transformers used output 17VAC will power the 350w DC rectifier solid... Electronics Projects, Transistor Power Supply 13.6V 22 Amp TIP142 "power electronic projects, power supply circuit, power supply project, " Date 2019/08/03