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# Voltage Doubler Circuit Using IC555

## Summary

Most of this project is circuit used for doubling the voltage uses the principle of charging and discharging the capacitor. The voltage doubler circuit described below is used to 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 voltage doubler 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.

## Description

Here capacitor C3 and diode D2 are connected in forward biased condition and used to amplify the signals. Diode D1 is used to protect the C3 from complete discharge. The following capacitor C4 therefore gets charged with a combined voltage from C3 and power supply. Therefore in this circuit, components like C3, C4, D1 and D2 are used to boost the input power.

A supply voltage of 3V to 12 V can be given to the circuit and not more than this. If the limit is exceeded then it will destroy the NE555 IC. 1N4148 diode can also be used in the place of 1N4007 but output voltage will decrease because breakdown voltage points of both the diodes differ.

## Components

Resistor

Resistor is a passive component used to control current in a circuit. Its resistance is given by the ratio of voltage applied across its terminals to the current passing through it. Thus a particular value of resistor, for fixed voltage, limits the current through it. They are omnipresent in electronic circuits.

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Capacitor

Capacitor is a passive component used to store charge. The charge (q) stored in a capacitor is the product of its capacitance (C) value and the voltage (V) applied to it. Capacitors offer infinite reactance to zero frequency so they are used for blocking DC components or bypassing the AC signals. The capacitor undergoes through a recursive cycl...

Diode 1N4001

1N4001 is a member of 1N400x diodes. Diode is a rectifying device which conducts only from anode to cathode. Diode behaves open circuited for the current flow from cathode to anode. 1N4001 is a 1A diode with low forward voltage drop and high surge current capability. It comprises of diffused PN junction and has low reverse leakage current of 5µA. Its DC blocking voltage is 50V.

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555 Timer IC

555 is a very commonly used IC for generating accurate timing pulses. It is an 8pin timer IC and has mainly two modes of operation: monostable and astable. In monostable mode time delay of the pulses can be precisely controlled by an external resistor and a capacitor whereas in astable mode the frequency & duty cycle are controlled by two external resistors and a...

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