HOW TO MAKE A 5 VOLT VOLTAGE REGULATOR

Hi friends today i will tell you how to make a 5-volt voltage regulator.

 ::LIST OF MATERIALS REQUIRED--

:A three terminal positive 5 volt voltage regulator ic ,i.e.,LM7805 ic

:A copper clad board (4.5cm by 6.2cm)

:Ferric chloride,FeCl 3    (!caution-highly corrosive substance) 

:Connecting wires
:Two 10uf capacitor ,One 1000uf capacitor,One 0.1uf capacitor ( all of 25volt and 85'C )
:Four Diodes IN4007
:A 0-18 step down transformer 500mA
:Shouldering iron and shoulder with flux paste. 
:Multimeter ( For measuring o/p voltage )

::PROCEDURE--
:Make the following design of copper clad board either with the help of using hand marking with the help of a black permanent marker (or nail polish) Or by printing the design on butter paper using laser printer and then transferring it to the board with the help of heating   (using iron).

 
:Place the marked board into the solution of 'ferric chloride' .After 20 minutes remove the board from solution and then first wash it with water and then with thinner.(Be careful !  Avoid ferric chloride direct contact to your body parts)
:Now place the component as shown in the figure and shoulder each and every terminals of component to the copper plate.
:Join the transformer Secondary coil to  where 18 v ac is written on the pcb (as shown in fig.).
:Now you can take o/p across 0.1uf capacitor which comes out to be 5 volt.
:You can easily charge your cell phone with this voltage output.