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FrozenGate by Avery

Polarity of Senkats diodes

Quote from Gazoo on Sep 8th, 2007, 9:07pm:
Agreed, the above pic is perfect, and if one can not follow that, then one should not be getting involved with the diodes. But he is going to plug it directly into a minimag so...........

So what kind of circuitry should I put in series w/ my diode?
If a direct plug in to a minimag is bad I would want to know...
 





I would not use a minimag...please refer to the experiments and modifications section of this forum. There is a ton of info. there.
 
Uh yeah plugging a diode directly in place of where the bulb was, is not recommended. Those AA batteries put out a ton of current. Not to mention the horribleness of the spike caused by switching it on. Lee your best bet is to read and keep reading. This whole forum is a library FULL of knowledge. ;)
 
Okay guys I know this thread is old, but here is some advice:

DOnt plug a diode directly into a minimag, unless u like to see ur diode fry and sizzle. Minimag's put out 3 amps, we want AT MOST 250mA (thats exaclty 12 times the current we need/want!!!)

What u need to do:
Go to experimants and mods section, get the circuit for DDL's driver, order kit from http://sales.stonetek.org

When u get ur LM 317T, cut the tab off untill there is a bit sticking out, then gently sand down some of the black part. You now have a mini LM317T.

Take PCB or circuit board or whatever, and folowing the schematic, solder everyhting on as compact a possible. (hint try to get the recitifer and resistors aas short as possible) Seperate all the metal parts with electrical tape

making sure electrical tape is keeping from any metal touching each otehr, gently push everything together.

you now have a mini driver circuit.
You can:

either take the reflector out, insert everyhthing in, and replace tailcap with switch (no reflector=minimag stays on forever (unless there is a switch))

OR

drill 2 holes in side of reflector
the driver will be situated in between reflector and flashlight metal part in the top
leads (input) on driver go through holes into minimag output.
drill 2 more holes into reflector
output leads from driver go through holes, and to ur aixiz module with diode in it

this is the only way to safely have a minimag laser

It sounds hard but its not, trust me, I did it in 2 hours.

amk
 
that sounds sweet but
do you have pics
how did you get the 6v out of the 2 AA batteries to properly drive the laser with that circut? :-?
 
rubberband said:
that sounds sweet but
do you have pics
how did you get the 6v out of the 2 AA batteries to properly drive the laser with that circut? :-?
Click to expand...


I donno I think I left something out...
 
amkdeath said:
[quote author=rubberband link=1189135730/30#36 date=1195368153]that sounds sweet but
do you have pics
how did you get the 6v out of the 2 AA batteries to properly drive the laser with that circut? :-?
Click to expand...


I donno I think I left something out...[/quote]

You need a minimum of 6 volts for the regulator to work properly for our application.

The batteries you shorted with your multimeter (because you had it on the amp setting) gave you the capacity reading of the batteries. I can guarantee you there is no way a laser diode will draw three amps from a pair of alkaline batteries. If I recall correctly the diode will draw less than 250ma's if hooked up directly to a pair of fresh alkaline batteries.

Having said that, at the bare minimum you can get by with a resistor and a capacitor. Of course using a driver and capacitor will provide the ultimate protection IF everything is soldered correctly and there are no bad connections.
 
regarding power:

I was thinking using 14500's or so, but now,

If I dont need a driver why put one...

also, you are saying diode stuffed directly into the minimag will not kill it??

I wonder why noone told me this in my other post...

Would I be fine with just a cap soldered in series with the laser diode?

sorry, im kinda nebie to circuits

amk
 
When you hook up a laser diode directly to power source, it draws huge amount of power when turning on, so it will eventually destroy it.
this is known as voltage spike
 
Eudaimonium said:
When you hook up a laser diode directly to power source, it draws huge amount of power when turning on, so it will eventually destroy it.
this is known as voltage spike
Click to expand...


yea seriously man, I was laughing when I read that, that was one of my first series of posts in the forum in November, when I first started this hobby. I am thoroughly enlightened now (just a note to some who may now be reading this ABRUPTLY resurrected thread :P )


regards,

amk
 
lol. i had to check that post date as well. i thought it was sarcasm haha
 
i need the same info (pin outs) but for the long open can diodes, is it the same?
 
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