This is a tutorial for upgrading the Lego 9v Train Regulator to provide more current. I replaced the LM317 adjustable voltage regulator with a LM350, which can provide twice the current. I also replaced the rectifier diodes and filter capacitor. I still have a lot of work to do and will provide updates in the future.

Download the schematic here
https://drive.google.com/file/d/1kvxz...

Twoloosebricks' video that inspired this project
   • LEGO 9V Train Speed Regulator Upgrade  

"Lego 9v Extreme" An amazing example of what can be done with upgraded 9v regulators

video:    • Part 1: Swedish Iron Ore Train with Dm3  
Discussion: https://www.eurobricks.com/forum/inde...

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