Probably, all in childhood, having learned about the existencelaser, began to dream of their own, capable of cutting everything in its path: wood, stone, steel. Of course, this dream could not come true, because powerful lasers are too dangerous to be given to ordinary people. However, at the present time, when computer technologies are developed, everyone can realize this dream to some extent.
In order to make a laser from a DVDhands, you need not so much: working (necessarily writing) drive, voltage capacitors, wiring, battery for mobile phone, multimeter, resistor, soldering iron, pointer, LED flashlight. And, of course, desire, free time and the ability to solder.
To make a laser from a DVD drive, you need to disassemble it. It should be recalled that only a writing drive is suitable for a design, since others do not have sufficient power.
Having disassembled the drive, it is necessary to find a laser diode in it.It must be remembered that in any drive there are two: one is weak (infrared diode), the other is powerful (laser red). It is difficult to distinguish between them, but it is possible: a more powerful diode, which is needed to make a laser, is in the disk carriage and has a larger radiator.
After removing the diode, you need to solder the driver.Without it, a laser from a DVD can not receive the power needed to operate. For the driver, two 0.1 and 100 uF capacitors are required, a resistor whose amperage is selected depending on the drive speed (250, 300, 400, 450 and 500 mA respectively for 16x, 18x, 20x, 22x and 24x).
When soldering these elements and drawing wires to plus and minus, it is very important not to confuse the polarity, otherwise the laser will deteriorate immediately.
To power the device, you can use a battery from a mobile phone with a capacity of 200 to 300 mA. However, for some lasers, a large capacity may be required.
In order to check whether the driver is properly soldered, it is necessary to connect it to the second (weak) diode from the drive and use a multimeter to measure the current.
If everything is done correctly, you can finallyCollect the laser from the DVD and put it in the body you like. In order for the device to last longer, it is recommended to fix all elements in their places with glue and seal them.
Making a laser from DVD is easy enough, but withCare must be taken when working with it. It must be remembered that it can cause damage, and therefore it can not be directed to animals or people. If you get into the eyes, the laser can lead to deterioration and even loss of vision.