LM337 high current - Búsqueda para electrónicos

https://bestengineeringprojects.com/category/electronics-projects/power-supply/page/2

https://carwirring.blogspot.com/2013/04/dual-power-supply-circuits.html

Transistors types have been altered to ones that are more readily available.

http://www.electronics-diy.com/electronic_schematic.php?id=485