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FrozenGate by Avery

MY TEC setup

Death Angel said:
Daedal very nice setup you have there. ;). I am having trouble though finding something to put the axiz into and be able to stick it to the TEC. Any suggestions? Thanks.
Click to expand...

If you have a Lowes/Home Depot around you... just go there and get a square nut and a set of drill bits. I use a drill press to make the holes the exact right size without any turns in the hole. That is what I did for the set up there. It's nice, easy and very efficient. I can easily tell that the temp is being transferred very efficiently from the temp of the TEC, the washer, and the module. :)

The fact that this little thing is almost the exact same size as the small stacked TEC makes it a perfect candidate. ;)

--DDL
 





Well I have done some tinkering with the voltage and current. I found that at 1.90 volts and 400 mA that no condensation occurs yet the aixiz feels nice and cold. ;D. I ran it this way for approximately 10 minutes. So in conclusion I think that 400 mA and 1.90 volts is very comfortable for the diode. ;)
 
Daedal said:
[quote author=Death Angel link=1192143214/0#14 date=1192170337]Daedal very nice setup you have there. ;). I am having trouble though finding something to put the axiz into and be able to stick it to the TEC. Any suggestions? Thanks.
Click to expand...

If you have a Lowes/Home Depot around you... just go there and get a square nut and a set of drill bits. I use a drill press to make the holes the exact right size without any turns in the hole. That is what I did for the set up there. It's nice, easy and very efficient. I can easily tell that the temp is being transferred very efficiently from the temp of the TEC, the washer, and the module. :)

The fact that this little thing is almost the exact same size as the small stacked TEC makes it a perfect candidate. ;)

--DDL[/quote]

Oh ok now I see the square nut. My TEC is 30 mm so I going to use 2 square nuts. One around the front and one in the back. Thanks Daedal. ;)
 
DA,
Just find a piece of solid metal and drill it out then hacksaw or dremel stone cut it to suit.
Drill press and a vise is a must unless your gifted with eye/hand coordination.
Just buy Alum. bar stock or brass/copper/ plumb/elec pieces at the hardware store.

DeDal..,
Great photo man, I can't find the close up lens I was using last year (GF problems) but I will be posting interesting pics soon! Got a C-50 Olympus and a homemade closeup lens.
And your V/C dbl. LM317 circuit works great! The voltage regulation first and then current regulation makes for a tight output product. No Salami!

Cheers [smiley=beer.gif]
DGM 8-)
 
Very good to hear that DGM :D

I must say... I am very excited at what you would put up now that you put it that way :D ;D

DA, remember that the hotter the diode/module, the more the TEC has to work to keep it cool... so an initial setup to keep it cool while its off is not necessarily the right power to keep it cool when it's powered... ;)

--DDL
 
please also remember, TEC's don't generate coldness, they just suck the heat out of stuff! so if you put a big load on a small peltier, it will not be able to transfer the heat fast enough, and if you don't find this out, you may kill your diode! be careful!
 
Thanks things but I did some extensive research on TECs. I understand this and am pretty comfortable. ;)

Daedal I do realize this but thank you for pointing it out. What I did was use your circuit and set the Aixiz on top of the TEC. Then I adjusted the current until running for 10 minutes or so I got no condensation and also the Aixiz was nice and cold to the touch. I would also do a test where I would check the lens for fog. It all seemed well at those settings.(1.92 volts 400 mA) I will have to see though when I get my GB diodes. Daedal also, would you mind telling me like what settings you use? Like how much current to your LD and what voltage and current you are running your TEC? Thanks again. ;)
 
That block in ddl's picture looks interesting.. did you but it somwhere, or made it yourself?
 
well DA, different types of TEC's and ambient temperature do affect the cooling capacity, so it is not really possible to give a solid answer. the best way would be to just slowly turn it up, monitoring the temperature, and set it when it is cold, but not collecting condensation! glad you are reading up on these things, they are very fascinating!
 
Benm said:
That block in ddl's picture looks interesting.. did you but it somwhere, or made it yourself?
Click to expand...

You mean the heatsink/fan block? That was my old CPU cooler for a P4. I pulled it off and am using it for the TEC now :)

--DDL
 
Things is right, to determine the current you need going to the TEC in order to cool the diode, you must have the diode glued to the TEC and turned on.

You say you are comfortable with 400ma's, but when all is said and done it will most likely take a bit more than that to keep the diode cool. Also, you do not need for it to be cold.....I mean as long as it feels a bit cooler than room temp. you will not have to worry about condensation.

BUT...the ambient room temp. and humidity has everything to do with how cool you can go before it begins to condensate. Don't forget the calculator I found to figure this out...it is posted in the experiments and mods section., under threads of interest.
 
My hardware store is used to me now bringing in odd stuff and looking for brass fittings which I can machine to fit. My holder is some odd fitting with a hole barely 0.001" larger than the Aixiz module. I milled a flat side and used Arctic 5 epoxy to mount it to the TEC. I then use a little Arctic 5 grease on the module.

Mike
 
yes gazoo, but also ambient temperature can affect the performance too! if you live in a really hot place, you will have to run your TEC at a higher power to get any coolness(even a word? ;D), and to make sure that your heatsink can cope with the extra dissipation. if your peltier is running full power, the difference in temp may not be much, but if you diode is just under room temp, and it decides to heat up...... well you know what will possibly happen! ;D
 
Daedal said:
[quote author=Benm link=1192143214/15#24 date=1192191855]That block in ddl's picture looks interesting.. did you but it somwhere, or made it yourself?
Click to expand...

You mean the heatsink/fan block? That was my old CPU cooler for a P4. I pulled it off and am using it for the TEC now :)

--DDL[/quote]

Nah, i mean the little block on top of the peltier holding the module...
 
Benm said:
[quote author=Daedal link=1192143214/15#26 date=1192209777][quote author=Benm link=1192143214/15#24 date=1192191855]That block in ddl's picture looks interesting.. did you but it somwhere, or made it yourself?
Click to expand...

You mean the heatsink/fan block? That was my old CPU cooler for a P4. I pulled it off and am using it for the TEC now :)

--DDL[/quote]

Nah, i mean the little block on top of the peltier holding the module...
[/quote]


Oh... See here ;)

Daedal said:
If you have a Lowes/Home Depot around you... just go there and get a square nut and a set of drill bits. I use a drill press to make the holes the exact right size without any turns in the hole. That is what I did for the set up there. It's nice, easy and very efficient. I can easily tell that the temp is being transferred very efficiently from the temp of the TEC, the washer, and the module. :)

The fact that this little thing is almost the exact same size as the small stacked TEC makes it a perfect candidate. ;)

--DDL
Click to expand...
 
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