Voltage Source 0-30 V

MATERIAL
1 Capacitor 3300 µf	1 LM317
1 Capacitor 220 nf	1 Transistor NPN: BC549
1 Capacitor 1 µf/ 50 V	1 Diode Bridge
1 Resistor 2.2   k	1 Diode Switch
1 Resistor 1.8   k	1 Led (Red)
1 Resistor 220  Ohm	1 Transformer 24 V \ 2 A
1 Resistor 1 Ohm / 5 W	1 Buzzer
1 Potentiometer 5 k	1 Switch
1 Fuse	1 Metal Box
1 Copper Plate

Assembling  on Protoboard

       

Testing on the Multimeter in DC (Direct Current)

Another picture

Simulation on Multisim 12.0

Maximum Voltage

Minimum Voltage

I leave you the simulation file:

http://www.mediafire.com/?wdml5cl6d4s1g82

*To see this file you need to install the Multisim, you can download it from this page:

http://www.ni.com/multisim/

Plate Design 

Putting the Plate on the Ferric Chloride and waiting to remove the copper from the parts without the printed circuit.

After 50 minutes the copper was removed and looks like this:

*Note: If you want to remove the copper faster you don´t have to mix the ferric chloride with   water.

We need to use thinner for strip paint the black marks and it will look like this:

Finishing  Voltage Source

*The Led only will on if the source have short circuit.

Testing if it works

Minimum Voltage

Maximum Votage

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