1. The required output voltage of the LM317 (U1) needs to be +10 V. Disregarding the IADJ current, what value of resistance does VR1 need to be to get +10 V out?
2. Draw any shunt regulator and tell me how it works.
3. Draw any series regulator and tell me how it works.
4. Explain why the efficiency of a series regulator is better than that of a shunt regulator