Hey, iv been messing around with circuits for a while, but im still a noob to the things one should know. But anyways, i need a circuit, relatively small one, to boots a 5.1 ~ 5.2 VDC up to 12 ~ 13 VDC. I need it because i am building a circuit that powers 2, 12VDC fans. I would like to make it so that it has a pot to contol the fans power, a bar graph LED read out to show how much power is being produced, and swich to choose fan 1, or fan 2, or both. Also there will be 3 LED light that correspond to one fan. The input Voltage will be from a cell phone charger @ 5 VDC. Any help or advice would be GREATLY appreciated!!!