If you want to get a powerful laser, with radiation of 200 mW, then find the appropriate DVD with the working carriage and the mounted laser head. Determine which glow you want to have red or blue-purple. The flashlight beam pick the appropriate illumination wavelength, which varies from 380 nm to 800 nm, the viewing characteristics of various emitters. Weak radiation can be obtained by extracting the same block, but from the CD drive. Both drives should be writing. Weak radiation will get from any printer, barcode scanner, mouse.
The design of the drive can be very different. Carefully deal with it in order to Unscrew a few screws. The laser unit is mounted on the guide carriage, which you will easily remove after you remove the fasteners. Then, remove from the unit optical element of the DVD, previously "seated" all the findings on the foil, or carefully wrapped in a thin wire, thereby eliminating a breakthrough by a statics. Decide with each of 3 conclusions:
- 1 output power "+";
- 2 output power "-";
- 3 output not used.
The power of the laser diode is 3 volts. Use two "AA" batteries. Can take for food and the usual crown, then collect an additional circuit of the voltage regulator. This option gives a more long-term use of your laser. Find ceramic capacitor 10 PF and polar 100 UF/16 V.
Then the directory, select the stabilizer corresponding to the voltage of 3 V, for example, КР1158ЕН3В. In addition, choose a suitable case and a microswitch.
Start the whole build process from soldering a ceramic container to the LD, remove the protective foil and solder a polar capacitor with the correct polarity. The ROLL-ka has three conclusions:
- 1 stabilized power supply +3V;
2 shared;
- 3 input voltage.
Again, strictly considering the polarity of the stabilizer and the laser diode, make the wiring of this part of the scheme. Now in the open circuit power source, and collected scheme you solder the microswitch. Check the assembled circuit and try to switch.
Gently pack the resulting product and place it in the prepared casing of the flashlight, removing the glass from the lantern. To make a laser yourself, you can without disassembling the drive, and after wandering through the online stores and picking up the required (or ordered) laser unit.