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Old 09-10-2007, 02:02 AM #1
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Default My first Labbie --

Here's my first labbie -- TEC cooled and using a GB diode. *Output -- 240 mW CW and cool man !!!Easily cuts tape etc ----

Mike
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Old 09-10-2007, 02:05 AM #2
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Default Re: My first Labbie --

very nice that diode must be pushed to the MAX is it cause thats what it is rater for pulsed lol.
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Old 09-10-2007, 02:16 AM #3
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Default Re: My first Labbie --

$100000000000 --

Actually, I toasted my open can LD by accident last night. Beware too many clip leads

This is the SenKat diode , cooled and pushed to 250 mW. Total module draw --- Fan, TEC and LD about 1.5 amps at 7.5 volts. That GB diode is impressive no matter what !!!

Mike
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Old 09-10-2007, 02:16 AM #4
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Default Re: My first Labbie --

Yeah, that's Mike for ya...ask him what 1.4 amps does... ;D

Mike....sweet...

Oops, Mike posted the same time I did..well now you know what 1.4 amps does..
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Old 09-10-2007, 02:24 AM #5
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Default Re: My first Labbie --

Quote:
Originally Posted by Hemlock Mike
Here's my first labbie -- TEC cooled and using a GB diode. *Output -- 240 mW CW and cool man !!!Easily cuts tape etc ----

Mike
VERY nicely done, mike
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Old 09-10-2007, 02:36 AM #6
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Default Re: My first Labbie --

Gazoo --

Right -- rub it in !!!!! 1.4 amps spells disaster even for an open can !! That SOB still outs a red LED !!! It won't burn out I got an new LG20x today --
I can't be without.........

The module has two current regulators - one for the LD and one for the TEC. A slightly modified DDL current source - still a bit unstable but a little bypassing to quiet the circuit and I'm there.

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Old 09-10-2007, 02:46 AM #7
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Default Re: My first Labbie --

Nice job, Mike!

I am planning on doing something similar as well. Do you recall the current that's going to the LD for the 250mW output? (300-350mA ??)

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Old 09-10-2007, 02:52 AM #8
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Default Re: My first Labbie --

Chimo --

You are in the range -- I'll measure later.

Mike

Update --- *260 mW at 0.430 mA. *Measured with an IL1400 meter. *This is the SenKat GB diode. * *Don't try this at home. *This current is a little over the knee of the power curve.

Disclaimer: If you push one of these GB diodes this high -- you are beyond specs and on your own ground. I do this because I have several replacement diodes for fun. I recommend that noobs stay within the 250 ma range because all diodes are different.
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Old 09-10-2007, 03:09 AM #9
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Default Re: My first Labbie --

great work mike! i am seriously considering this aswell, although a portable burner would be nice! :-/
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Old 09-10-2007, 01:34 PM #10
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Default Re: My first Labbie --

Very Nice
So, as long as you cool the diode, you can run it that high, right?
Thanks
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Old 09-10-2007, 01:57 PM #11
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Default Re: My first Labbie --

Nice setup!

I can't really tell from the picture, but how exactly did you mount the diode onto the TEC? Looks like a thread and nut sticking out on top?
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Old 09-10-2007, 03:37 PM #12
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Default Re: My first Labbie --

Mike... you crazy nut! ;D That looks incredible! I haven't had the time to work on it at all, but I was telling SenKat yesterday that I think I have a nice setup for a self-controlled TEC power... I was thinking of using an N-MOSFET, but then changed it to using a comparator with either a thermistor or an LM35. Give it a shot if you've got the time... it would be pretty cool Literally

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Old 09-10-2007, 09:17 PM #13
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Default Re: My first Labbie --

The Module is an Aixiz which is fitted into a brass housing. The set screw retains the module in the cooled housing.

Ahah -- I have a picture ---

Mike
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Old 09-10-2007, 09:40 PM #14
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Default Re: My first Labbie --

Quote:
Originally Posted by Hemlock Mike
Gazoo --

Right -- rub it in !!!!! 1.4 amps spells disaster even for an open can !! That SOB still outs a red LED !!! It won't burn out I got an new LG20x today --
I can't be without.........

Mike
I got two new LiteOn's today...one went right back into my computer. I will harvest the other one after the open can I am currently using throws up... ;D
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Old 09-10-2007, 10:17 PM #15
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Default Re: My first Labbie --

Quote:
Originally Posted by Gazoo
[quote author=Hemlock Mike link=1189389740/0#5 date=1189391775]Gazoo --

Right -- rub it in !!!!! *1.4 amps spells disaster even for an open can !! * That SOB still outs a red LED !!! *It won't burn out * *I got an new LG20x today --
I can't be without.........

Mike
I got two new LiteOn's today...one went right back into my computer. I will harvest the other one after the open can I am currently using throws up... ;D
[/quote]It won't be too long before the one that just went into your computer gets pulled for other duties I am guessing. You might want to get some sort of 'quick-release' setup for your computer's DVD case. ;D
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Old 09-10-2007, 10:22 PM #16
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Default Re: My first Labbie --

Lol...it is all quick release.. ;D It only takes a minute to install or take out a drive.

I am done with the Lite On's after this for harvesting. From now on it will be the Pioneer 112D.
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