LOLbooster: Power Supply

Next up: The power supply. LOLbooster includes one 6V regulator for the various logic chips, but where most DIY designs defer track-level voltage regulation to the wall-wart, I’ve opted to include it on the board. Why? Because wall-wart regulators are very good at keeping a steady voltage—at the power jack. But we, finicky modelers that we are, want to keep a steady voltage not at the power jack, but at the rails. Which is an entirely different bucket of colored horses: It means we need regulation on the booster itself. Read on. 1 Nov 2010: Turns out the load regulation circuit below...