Circuit 1.3 may 22 volts can be set to 1 amperes power normally lm317t 1.2..32 volt set can be used for some reason the restriction put r2 is canceled and 2k trimpot 5k is used in place if a simple power supply circuit adjustable to 32 volts can be used to operate low-current circuits without cooler Do not use ..
LM317 Adjustable Regulated Power Supply
