bobo99
0
- Joined
- May 18, 2011
- Messages
- 128
- Points
- 18
Hey guys, so still working on my first build and well, still trying to learn the ropes... by blowing up some diodes :cryyy: (and head banging smiley)
Working on a 405 (S06J) - V5 flex drive build with one 18650.
My process was as follows:
1) Bought a completed test load from Jufran88. Great little thing. Set the jumper to 6, for 6 diodes to simulate the blu ray diode.
2) Set the current to 520mA. I know this is a little higher, however there was this weird spot where there was a gaping hole between 480-520mA. Now at this point I turn the battery off, then on, then off then on, and make sure it ALWAYS hits 520, and it does, like a rock, no overshoot, just straight to my desired current setting.
3) TESTED the diode and it worked great. Even burned a nice little hole in my wall 10 feet away. OK super. Total run time of about 20 seconds, pretty strong, no fluctuations, nothing.
4) Mixed up some thermal adhesive and glued it in my custom host. Let it set for about an hour. Checked the current output again! Good - shorted the leads on the driver with a resistor.
Hooked up all the wires, and pressed the magic button, BRIGHT light for 1 second, and then this faint light that I can't even see through my goggles.
F&*^
So the first thing I think of is ok clearly current is WAYY too much, but 520 doesn't seem like it would just KILL it. Then again I have no idea what too much would be.
So unsolder all the wires, hook it back up to the test load, and there it is, it hits 800, down to 600, then hovers around 650 (mA) then continues to oscillate up and down between 600 and 800.. I sit there with it, and say smarten up. I then turn it down to 480mA and then its rock solid again, no overshoot no oscillation nothing. The driver is properly heat sinked with the thermal adhesive, so I don't think thats the issue.
Clearly the diode is toast, (my second one ) but what could have gone wrong?
The only thing that could of happened was when I was stuffing in the wires, that somehow the pot got turned, almost 1 full revolution :S? A act of proverbial god, the pot is hard enough to turn when your trying..
I had my friend make this custom on a lathe, so heatsinking IMO is not an issue, probably overkill.
Any words of advice? Other than 3rd times the charm?
EDIT: Positive pin is hooked up to positive driver lead, and the negative and case pin are hooked up to the negative of the driver output.
Working on a 405 (S06J) - V5 flex drive build with one 18650.
My process was as follows:
1) Bought a completed test load from Jufran88. Great little thing. Set the jumper to 6, for 6 diodes to simulate the blu ray diode.
2) Set the current to 520mA. I know this is a little higher, however there was this weird spot where there was a gaping hole between 480-520mA. Now at this point I turn the battery off, then on, then off then on, and make sure it ALWAYS hits 520, and it does, like a rock, no overshoot, just straight to my desired current setting.
3) TESTED the diode and it worked great. Even burned a nice little hole in my wall 10 feet away. OK super. Total run time of about 20 seconds, pretty strong, no fluctuations, nothing.
4) Mixed up some thermal adhesive and glued it in my custom host. Let it set for about an hour. Checked the current output again! Good - shorted the leads on the driver with a resistor.
Hooked up all the wires, and pressed the magic button, BRIGHT light for 1 second, and then this faint light that I can't even see through my goggles.
F&*^
So the first thing I think of is ok clearly current is WAYY too much, but 520 doesn't seem like it would just KILL it. Then again I have no idea what too much would be.
So unsolder all the wires, hook it back up to the test load, and there it is, it hits 800, down to 600, then hovers around 650 (mA) then continues to oscillate up and down between 600 and 800.. I sit there with it, and say smarten up. I then turn it down to 480mA and then its rock solid again, no overshoot no oscillation nothing. The driver is properly heat sinked with the thermal adhesive, so I don't think thats the issue.
Clearly the diode is toast, (my second one ) but what could have gone wrong?
The only thing that could of happened was when I was stuffing in the wires, that somehow the pot got turned, almost 1 full revolution :S? A act of proverbial god, the pot is hard enough to turn when your trying..
I had my friend make this custom on a lathe, so heatsinking IMO is not an issue, probably overkill.
Any words of advice? Other than 3rd times the charm?
EDIT: Positive pin is hooked up to positive driver lead, and the negative and case pin are hooked up to the negative of the driver output.
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