First burning laser Do you think this will this work?

[weetardedpolygeek]

m creating a burning laser for the first time and i was wondering if these components would give me the desired result.

250ma red laser diode hoked up to aLM317 driver, 2 10 ohm resistors a 100 ohm variable resistor a 10mfd 16v capacitor and a 1n4001 diode
all of this will use a 7.2 volt power source.
will this burn? or even work?

 

[Fiddy]

sure would if you hook em up correctly and set the current properly.

 

[TheDukeAnumber1]

sure would if you hook em up correctly and set the current properly.

True. Also, good luck.

 

[billyblanko]

this image has been posted 100`s of times ...use the "search" button & u would find ;

 

[weetardedpolygeek]

right Ive see this picture before , and if i were to say use a 125 blu-ray laser diode, a single 10 ohm resistor would be used in lieu of 2. does anyone have any good sources to buy such diodes?

 

[billyblanko]

"search button"

look here >>Laser driver - It can be done

all the info u need

scott

 

[kilter]

You could also do what styropyro does in his video $3 laser driver.

 

[weetardedpolygeek]

300-400mW brand new red laser diode/extracted from LPC-826 [OL-LPC-826] - $10.99 : Zen Cart!, The Art of E-commerce
would this diode work to light things with ease?
its current is higher as is its power input, but my understading of laser strength is very limited.
there was another laser on this site
High Power Infrared 808nm 100mW laser pen /burning [OL-H808-100] - $29.99 : Zen Cart!, The Art of E-commerce
(fully assembled) and its wavelnth was 808nm, its power only .1 W (less than a tenth of the laser i'm building with a longer wavelength) and it say it can burn. do i totally misunderstand what goes into burning capacity? if this info is on this site and ive not loked hard enough just tell me.

 

[TheDukeAnumber1]

if this info is on this site and ive not loked hard enough just tell me.

It is, you haven't.

 

[weetardedpolygeek]

SO i've done lots of reading and i still am not completely sure of a few things. perhaps you of you will be kind enough to verify/clear a few things I so foolishly hold to be true.
i read that the following diodes would give off a beam powerful enough to say light a cigarrette:
a 500mw 808nm diode (not sure what color)
a 170 ma BR
20ma ir
an LPC 815 420ma
and a 120 mw ir

 

[CapeClover]

SO i've done lots of reading and i still am not completely sure of a few things. perhaps you of you will be kind enough to verify/clear a few things I so foolishly hold to be true.
i read that the following diodes would give off a beam powerful enough to say light a cigarrette:
a 500mw 808nm diode (not sure what color)
a 170 ma BR
20ma ir
an LPC 815 420ma
and a 120 mw ir

808 nm is infrared. It is invisible to your eyes.

 

[maddog2099]

808 nm is infrared. It is invisible to your eyes.

And much more harmful if not using goggles, you won't even know if you get a beam to the eye until you feel it, there aren't many "close calls" with IR. You don't get the visual warning that causes you to jerk your head away.