Most of this project is circuit used for doubling the voltage uses the principle of charging and discharging the capacitor. The circuit described below is used to [[wysiwyg_imageupload::]]double the input DC power by using IC 555 timer with capacitors and diodes. This circuit is useful when higher voltage level is required from a single lower voltage power supply.This project is based on 555 timer wired in astable mode means it will produce a square wave at a frequency of 2KHz approx with the help of components R1,R2 and C1.When input power is supplied to the circuit an output is produced at PIN3 of IC1. Continue reading to find out how this circuit can be constructed and what connections can be made to make this circuit work efficiently.