Newbie level 5
hi, i want to make a variable regulated power supply. i need a circuit for variable dual tracking power supply using pic microcontroller, and display the voltage in LCD display. i used LM317&337, kindly explain me with ckt, how to interface the -ve voltage (ie o/p from LM337) part to the microcontroller. potentiometer on LM317 is connected to the +ve part.