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Your first driver
Author: SuperLazer.Ru
What is it, driver? why do you need? bulbs do work without it! The fact that the laser diode is very delicate
item! it is not an oak lamp, which does not matter what it is fed.
The driver of the laser diode (LD) is a small scheme, which sets the power mode laser. it follows that the
current through the LD does not exceed the level exhibited. The fact that the LD semiconductor component,
and so terribly non-linear ... ie the LD current increases not directly proportional to voltage, but much faster!
why not use stabilizers current for powering the laser diode.
Well, the first driver ... not the ultimate dream of course, but for the first time come!
What do we see? first battery. is either the battery from any phone, or composed of three finger batteries. not to
be confused with batteries!
then press .. actually, any)))
resistor .. its resistance is selected empirically in principle, 16X drive, its resistance must be two Ohm's law,
then the current through the LD will be about 250mA. resistor can either buy or find on-board drive ... often
been there on the 1st resistors, connecting the two series have two Ohm. If such a value of current does not suit
you have to pick up resistor .. is necessary for the ammeter, which is connected to the break in the positive
battery cable and changing the resistance to select the desired current.
Capacitor 100nF on .. a ceramic capacitor, if there is a faradmeter can be found on the motherboard and drive!
By the way if you have the old board, you can search them orange round the parts labeled 104, it is a capacitor.
Electrolytic capacitor 2200uF on .. Of course such a capacity is the ideal option, but often enough and 100mkF
capacitor on 6.3volta. way voltage can be 10V and 16 and 25! is not important! Well, actually he LD! LD
solder in the last turn with a wrapped wire legs (remember about the statics, yeah?) When the installation is
finished, remove the wire! all, the first driver is ready!
Results:
simple driver does not stabilize the current, it is his only limits .. so your laser is as a flashlight, batteries, sparse
than those dimmer will shine! but the worst thing that is very difficult to understand exactly when the batteries
begin to sit down, because the eye is always a ray of bright .. so that once packets have ceased to melt it's time
to charge! Disadvantages shortcomings, but the driver is very simple and tiny!