Power supply regulator 1_2V-20V

 

power supply regulator 1_2V-20V and 3V-6V-9V-12V 3Amp With LM317T and 2N3055

 This is Circuit Power supply regulator Current 3Amp Voltage output : 1.2V-20V and 3V,6V,9V,12V.
Use IC LM317T and 2N3055, Easy to Bulid and normal part low cost too. detail see in circuit image.