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answer to Q1 and 2- the IR out of the 115 is only about 160mW (at 250mA)... the red out of the same drive is at least 270mW at 450mA. (got this info by SEARCHING) you will probably need a bit more power than that to cut anything 3 - don't know about glasses, i don't have any (i will probably go...

all i can suggest is to build it and test it on a couple of led's in series, measuring the voltage and current with an oscilloscope I wouldn't trust it on a blueray without testing first the author suggest to be careful driving led's with this circuit, this means you would have to be 10x more...

yeah i use acid flux, it just needs to be wiped away after soldering with a damp cloth. it works really well though, its good for soldering to batteries i should probably get a pen to do boards properly

probably normal, however i have never used a flux pen, i just got some soldering flux from the hardware store.

that is irrational. you can get 5 lm3410 samples from national shipped for $9.50 thats probably the best deal you can get after free shipping.

the voltage across c2 should be the same as the voltage across c3 which should be the voltage across the diode and sense resistor, which should be under 10v for any laser! which is what i have been doing until now, but i am trying to figure how much it would cost to make 10 or so, to sell

oops did i post the 1ohm one? i meant to chose 0.1 why won't 10v work for sepic? the sepic schematic only calls for 6.3v. ia 25c a lot for a smd capacitor? how much should i be paying

if there is some interest in these boards, i could make small quantities myself probably for around $15 each for an order of 10 if i etch the boards myself hey phenol, what do you think of these caps (for c1, c2 and c3)...

you can buy them for $3 each from digikey http://www.digikey.com/scripts/dksearch/dksus.dll?Detail?name=LM3410XMFCT-ND and the lt6106 for $2 http://www.digikey.com/scripts/dksearch/dksus.dll?Detail?name=LT6106CS5%23TRMPBFCT-ND I used my university address this time, and they accepted that and...

for sepic operation? possibly... probably. i will try it tomorrow, i should probably sleep now i should design it for coupled inductors to save space and increase efficiency although this table doesn't look very promising http://www.coilcraft.com/lpd4012.cfm i tried ordering some lm3410's and...

he didn't, he was just very lucky :P you can run a red burner off one if you use an AMC to drive it

thats what i was getting at. well here are some updated board layouts, top views, and overlayed (with the red on top) and phenol, do you think C3 in my schematic is necessary? i included it because it is the supply for the amp, and what value should it be?

that sounds like a good combination. the only thing is that the current is proportional to 1/Rout, so as the current gets higher, smaller turns of the pot will have a bigger effect. the only way to overcome this would be to setthe max required current and only use the pot to decrease the current

what current do you need? and to make it adjustable, a pot can be put in series, it would lower the current. a 10k pot would vary the current from 40-95mA and that board layout i put up before needs an extra resistor (in series with the pot) and another cap on the high side of the current...

lol yeah. it should just work. current mode smps's are not as hard as they look, although i have not worked out the accuracy due to the extra gain of the amplifier, it probably doesn't matter. what, did you think that i just threw some components together blindly? :P it doesn't take much...

my bad :-[ I just realized i screwed up that equation, it should be: (current) I = 0.19 * (Rin / Rout) / Rsense so as Rout gets smaller, the output current will get larger. ok just change the resistors. what current do you want? should the circuit be adjustable via a pot? this should work...

oh ok, yeah well i am getting quite used to using eagle, so its easy to design boards I think its connected the way its supposed to be, i did it at like 1:30AM so it might be dodgy :P edit: i screwed up, the following is wrong and the resistor values are 0.1Ohm for the combined sense...

the SOT23 are around the same size, 2.85x2.92mm, the LLP was around 3x3mm i wonder how much they would cost to produce... now that i think about it, you would probably be better off making a few yourself. rather than sending parts to and from australia... and i would have to charge something for...

lol i know how you feel. i would gladly make a few circuits for you, but i am out of chips, and inductors, but source of caps and resistors is ok (lots of electronic junk i have hoarded) the LT6106 actually looks very good, and i noticed that the lm3410's are now available to sample in SOT-23...

there is actually a good 1 or 2mm clearance. enough to wrap electrical tape or shrink wrap, i should probably do that... igort. where did you get these awesome sounding diodes?