Rad86N
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- Joined
- Jun 28, 2009
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- 12
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how did you get this number?...so only 2.5v for the laser diode?....
I confirm it. And the max current is 270mA or so.. measured
thats why i dont use the 5ohm resistor.. to get as much as possible from the 5V input. *even with the 5ohms, i could have burned matches with 16x dvd diode
i think, its maybe not as much mW, but at least longer life for the diode.
1N4007 should be OK, just measure the voltage drop over one of them to see that it gives you 0.7v
1N4007 drops 0.33V.. but i use it instead of - 1N4001 rectifier diode (protects LD if batteries are inserted the wrong way round).. i dont use it for the test circuit.
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btw.. i tried 6x1.5V AAAs with the default DDL circuit as it is shown in the first post of this topic, and i burned the diode. i thought i can supply the driver with any voltage up to the LM317T max input and the chip will turn the unused power into heat.. but 9V demaged my diode. it just went dimm.. not even as bright as 5mW diode
i got the dvd drive with this diode for like $5 so please dont comment i killed a diode not A diode yet.. lol
thanks for answers and/or any reaction.