This circuit is simple, direct current power supply.It can adjust the voltage to 0-15Volt with rotating VR.And current is 1A.Using a transistor number 2N3055,It is used to boost up electrical current the output. For C1, C2, C3 for electric filtering the smooth up. This integrated circuit used for constant current.Q1 – 2N3055 should be taken with a heat sink.
Source : http://www.bonavolta.ch/hobby/en/audio/reg_sup.htm
Thank you.
