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ArcticMyst Security by Avery

God i hate drivers. Can i do this instead?

Toke

Toke

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I would like to state the obvious in case anyone overlooked it on midias drawings.

The pinout of the LM317 is swapped around between the schematics and the actual component. :(
It is rather annoying and have in corporation with too much beer cost me two LOC's some months back.
 





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anselm

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Ehrmm no....
pin out of the component is:
left -> adjust
middle -> output, common with the base of the IC
right -> input

The 2nd schematic is a bit confusing, but it doesn't represent the actual layout
of the IC, just the connections to be made, and they are correct.
The 1st and 3rd picture, there's nothing wrong either as far as I can see.:thinking:

Now you've gotten me confused...
 
Leodahsan

Leodahsan

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@Toke

attachment.php


Just swap teh resistors, this is for the high current 445s ;)
 

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midias

midias

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Toke said:
I would like to state the obvious in case anyone overlooked it on midias drawings.

The pinout of the LM317 is swapped around between the schematics and the actual component. :(
It is rather annoying and have in corporation with too much beer cost me two LOC's some months back.
Click to expand...


The datasheet is correct. The schematic symbol should call out pin numbers but that is usually how you see it on a schematic. but the drawing with the device is correct unless you turn the device around backwards
 
Toke

Toke

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Guess I could have expressed myself more clearly.
I simply wanted to draw attention to the difference in representation on a schematic and on an actual component.
 
midias

midias

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Toke said:
Guess I could have expressed myself more clearly.
I simply wanted to draw attention to the difference in representation on a schematic and on an actual component.
Click to expand...

Ahh yes schematics will often do that rearrange pins to make things easier for the guy doing the capture. You just have to match the names but then again they really should have pin numbers on the schematic.
 
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Lascannon

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ok, so i did it again, And i did it right this time, just like the schematic said. it glowed, but defenetly not nearly as brightly as it should have been. It wasnt even as bright as an LED. it also started to become hot to the touch after only a few seconds. obviously, something is broken. Now i know its not my circut that broken, so it must be the LED. I must have, at some point during my previous failures, burned it out in some way. what ever. I got it for 4 dolars online, and il get another from the same place. my question is this: do i or do i not need some kind of heat sink for the next one, or was it only heating up so much because i burned it out.

Thanks,
Liam.
 
midias

midias

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Lascannon said:
ok, so i did it again, And i did it right this time, just like the schematic said. it glowed, but defenetly not nearly as brightly as it should have been. It wasnt even as bright as an LED. it also started to become hot to the touch after only a few seconds. obviously, something is broken. Now i know its not my circut that broken, so it must be the LED. I must have, at some point during my previous failures, burned it out in some way. what ever. I got it for 4 dolars online, and il get another from the same place. my question is this: do i or do i not need some kind of heat sink for the next one, or was it only heating up so much because i burned it out.

Thanks,
Liam.
Click to expand...

Did you put the diode in a laser module?
 
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Lascannon

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Yes, it was the diode. And no, I didnt have a housing. Should i have? And if so where can i buy one? Come to that where can i buy one? my driver is working perfectly (i think) and i have another diode. so before i put it all together, what ELSE do i need?
 
midias

midias

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Lascannon

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Can I make something like this? It looks awfully simple. And why dont they need one of these for the dvd burner i took it out of?
 
midias

midias

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Lascannon said:
Can I make something like this? It looks awfully simple. And why dont they need one of these for the dvd burner i took it out of?
Click to expand...

If you have a lathe you can. Because in the burner the run lower current and a built in heatsink. If you ever want a beam you will need a module and a lens like in this kit
 
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