Voltage doubler

Actually circ works great when you do some small tuning to fit the needs of this device :-) First pump source must swings up'n down means below and abowe the dc power supply (you forgot to set your pump to swings below ground of dc supply so it's swings only abowe and can't grab charges to be pushed) and second (cosmetics :-) lower the cap value so it will do not finish in one swing :-) (there's must be some show to public hook some leds everywheren even if they are crapy and not need at all hehe ....leds have fans even in forgoten jungle indian tribes and martians also like them i hear heheheh :-)

This is a voltage doubler, also known as a "charge pump". You charge one capacitor and then lift its potential to Vin. This makes the stored voltage add up to the suppy voltage. Then store the result in another capacitor. The same is done in a MAX232, it uses this method to generate +/-9 point something volts out of a single 5V supply to create an almost RS232 like signal.

good