Recent content by deltawars

I posted here because its so hard to find forums, if anyone knows a good computer forum room please let me know. OK so my bro keeps all his data, pictures and important info on 1 HHD in his laptop, he dropped his laptop and now the HHD doesn't work, i tried plugging the HHD into another PC but...

I thought what the heck and tested it by contenting it strait to a battery, it didn't work but after cleaning off the broken silicon it worked. Because half of the silicon is missing I'm guessing I can only power it up half of the maximum power.

The 40A laser diode bar I ordered arrived today, but i was looking at it and it looked like the silicon is chipped, i also tested it with a multimeter and current can flow both ways i thought a laser diode is a laser diode? I don't have anything to power it up but i wanted to know if it is dead...

You can look at a laser beam of any wattage just fine, unless your in a super dusty environment, I would say a rule of thumb if your eyes strain or hurt then don't look. You should not look at a laser dot above 5mw, if you do you can get eye damage and very likely permanent eye damage. If you...

someone needs to sell copper modules and hosts that are silver plated, that way you have awesome heat sinking and the host would look really cool and not oxidise. Now that I am thinking electrolysis is so dam easy we can just do it ourselfs, when I do my next build or maybe the one after my...

I chose Only when Inside. Outside doesn't pose much danger. With my 3W laser I can feel the light hurting my eyes, even if I aim the laser behind me, the reflected light is just to much and I don't want to damage my eyes as its mostly retina damage which is permanent, so there is NEVER a time...

OK after reading and learning some more, I'm getting confused and I want to ask some questions, sorry for my noobness but sometimes the internet is great, and sometimes there is a lot of contradictory information. Correct me if I am wrong but, to work out the value of the sensing resistor(Rs) I...

Ahh Cr*p why do I never read anything properly.

I got a 100w 0.01ohm unfortunately the wattage going through it is 112W but its not going to be powered on for long anyway, I also have a 25C temp cutout for the mosfet, as the temperature of the mosfet rises so does the forward voltage drop which makes the current rise, I=Vds/R

I just realized how the lines on the graph work. Im 99% sure its linear im a small transistor a mosfet and 2 resistor, i have seen a few people use the same type of driver and it works very well.

It is a n ch mosfet the part number is IRFP064N. And woops wrong graph, i think im looking for the drain to source current and drain to source voltage, im trying to work out the forward voltage drop at 40-45A at the differnt temperatures, but im not sure on how the segments in the graph works.

OK I finally bought a laser diode, it is only a 40W CW but I got a great deal, £17.89 + £25.93 Postage, $30.00 + $43.50 Postage. Now I am trying to read some datasheets but I'm total confused on how to read these graphs, can someone please tell me. Correct me if I am wrong but is this graph...

I know we run them at Constant Current and the current should not be more then the rating, but is it fine if the voltage is around 2.6V even though the datasheet says 1.9v Max? And sorry for asking all these questions but this isn't cheap, the 60w diode is £200 alone, plus cooling fans are like...

No I don't have a source I just assumed I could find it anywhere, but I have found a place where I can buy 40W diodes made by Coherent. http://www.coherent.com/download/6631/Conduction-Cooled-Package-780-nm-830-nm-Data-Sheet.pdf I have also found a place that sells 60W diodes but they don't...

For cooling I want to use heatsinks and fans, maybe a TEC. But I still have some task ahead, for instants I need a driver and lens to focus the beam, the battery was only one small part.