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i think that i will buy this adjustable driver from ebay: Adjustable current laser diode driver 80-500mA w/TTL | eBay but how do i know how many ma there are, every time i turn the pot?

anthot, are you the seller? can you send me further information and shipping costs (i am not from america)? are they adjustable?

are there any drivers near 5$?

linear

i think that i will buy this: eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices in the description it says: "A safe current for these diodes is around 90-110ma that will give you around 80-100mW" So, what's a good and cheap 90-110ma driver?

:anyone:

thank you guys for your links and your advice. Now i have aswered most of my questions, but can someone help me to find an adjustable driver (from ebay)? I saw very good reviews about this: http://hacylon.case.edu/ebay/laser_diode/Groove_2.php but i prefer a cheaper driver to begin because i am...

slivershot yes i am from cyprus...apoel forever! Guys, let's start again... When i say "i searched in google and i didn't find anything" i mean that i found some results (not just nothing), but to understand them you need to have some extra knowledge that i don't have! So the reason that i am...

thank you guys, but you still don't answer my question. Every time i have to choose a driver which is as mW is the laser diode? (i am not talking about homemade drivers).

So, every time i have to choose a driver which is as mW is the laser diode? For example, if i use a 200mW laser diode i also have to use a 200mW driver?

and what happens if i don't use a driver and i just use my batteries and my diode?:anyone:

Hi guys! Sorry for the stupid question, but when i searched in google what's the job of a laser diode driver, i couldn't find anything helpful. So far i have made a circuit using a laser diode, batteries and a resistor. Can someone help? thanks :thinking: