How to make a light-emitting diode

How to make a light-emitting diode

The light-emitting diode represents the semiconductor device which comprises electron-hole transition or contact as metal semiconductor. In turn, exactly by means of these elements the light-emitting diode can create optical radiation with use of electric current.

It is required to you

  • - halogen lamp;
  • - screw-driver;
  • - hammer;
  • - glue;
  • - puncher;
  • - paper template.


1. Take a halogen lamp and take out from it all unnecessary elements. For this purpose take the screw-driver and by means of it take out white putty. It is about lamp legs. This putty has to crumble well when pressing it the screw-driver. Thus you will be able to get rid of this substance completely. Be careful, the halogen lamp is quite fragile subject.

2. Take out a lamp from the reflector. For this purpose the hammer can be necessary for you. Put a lamp on a table legs up. After that slightly hit with the hammer on legs. The blow has to be as it is possible more softly. The halogen bulb has to just drop out on a table surface, and the reflector to remain empty. Do not remove the remained white putty in a lamp - it can be useful to you still.

3. Make an aluminum disk on which you will be able to fix a light-emitting diode. In this case the disk will be as the reflector. In turn, to cut out a suitable disk, you need simple paper template. You can make it independently. Count its diameter proceeding from diameter of a light-emitting diode (about 5 millimeters). Then draw a template and by means of scissors cut out it directly on a contour. After that record a template on in advance prepared aluminum sheet by means of glue. Further cut out an aluminum circle according to a contour of a template and make holes on the received circle by means of a puncher.

4. Aggregate light-emitting diodes. For these purposes you need a small support. Put on it a disk. If you cannot find a support, then can use instead of it any piece of the pipe which is the most suitable on diameter. Further insert light-emitting diodes legs up into holes of an aluminum circle. At the same time try to establish them so that the cathode from one light-emitting diode was near the anode of the second. Thus it will be simpler to you to solder them.

5. Drip a small amount of glue between light-emitting diodes. Consider that glue should not adjoin to legs of light-emitting diodes. Otherwise at accustoming to drinking glue will emit harmful smoke which is very harmful to mucous an eye. After that it is necessary to solder legs of lamps, plus to minus.

Author: «MirrorInfo» Dream Team