DC-DC Voltage Doubler (simplest Possible Circuit)

This voltage doubler circuit uses a DPDT switch to alternately charge 2 series connected capacitors. The main purpose of this circuit is to illustrate the principle of operation of switched-capacitor voltage multipliers. Other applications are up to you !

SW1: double pole double throw switch (DPDT)

C1-C2: 2200uF electrolytic capacitors (voltage & capacity according to application)

Bat: (any battery)

Led1: (green led for this demo)

R1: (1K for this demo)