The LM317 was designed in 1976. It is incredibly versatile, and over the years there have been scores of different circuits developed with the LM317. It can even regulate voltages in the hundreds for tube circuits. I used the Maida regulator in my tube amps.
Hardware: RPi Zero W | Allo Kali | ProtoDAC TDA1387 X8 | PGA2311 | Icepower 500ASP | Harbeth SHL5
Software: Moode 8.3.3
Source: Win 10 NAS
Software: Moode 8.3.3
Source: Win 10 NAS