The Dickson Charge Pump is a neat trick for multiplying an input voltage. It is basically a capacitor bucket-brigade, with diodes for flow control, and a switching signal to make it go. It is not the most efficient voltage booster, and cannot drive very high currents, but may be a convenient solution depending on the application.
The version I’ve implemented here runs on an Arduino with a 62kHz PWM signal and generates a zener-regulated 12V output from the 5V supply on the Arduino.
As always, all notes, schematics and code are in the Little Electronics & Arduino Projects repo on GitHub
