DIY SYNTH PSU: How to design a simple dual power supply

IMPORTANT! Please note that this is not a beginner’s project. If you are new to electronics DIY, I strongly recommend you start out using 9V batteries. I don’t take any responsibility in case you burn down your house! Support the channel: [UPDATE: I used to have links to shops that sell wall warts here, but they’re no longer valid. You’ll have to look for them yourself. Sorry!] In this video, I walk you through the process of building a simple dual power supply. Conceptually, it’s identical to the MFOS wall wart PSU or the FC Power by Frequency Central. It can be used to power your self-built synthesizer modules. If you want to build along, here’s the bill of materials: 1x 7812 voltage regulator 1x 7912 voltage regulator 2x matching heatsinks ( screws/nuts) 1x thermal paste 3x 1N4007 rectifier diode 6x 4700 uF electrolytic capacitor 4x 1 uF ceramic (or tantalum) capacitor 1x 12V AC to AC wall wart 1x matching plug socket Chapters: 00:00 Intro 01:33 DC vs. AC adapters 04:02 Voltages & ground 06:30 Rectification 08:23 Which wire is ground? 10:12 Rectification in practice 11:20 Filter caps 14:09 Ripple & voltage regulators 17:38 High frequency ripple & decoupling 20:09 Regulator protection 23:00 Negative rail 25:25 Outro