Sunon 20mm 5V fans, small heatsinks and 7mm peltiers

[kiyoukan]

nope its comming.

 

[jander6442]

Re: Sunon 20mm X 20mm X 8mm 5V fans and small heatsinks

ok guys I'm getting your pm's but I am getting a bit confused, like many other vendors request please put your name and your forum name in the paypal please, this will help me a great deal.

Sorry bosco I pp you before reading this... I orderd 4 fans and 4 heatsinks
My full name is Josh Anderson. Thanks for the leg work this kinda thing gets you some repz.:wave:

Also picked up 40 of the peltiers today, they are 6.15 mm x 7.3 mm, bare leads and one surface is coated in solder. They came with no specifications or any manufacturing data . . .

I actually own one of these tiny fans, got it from eBay for experimenting with active cooling in my 445nm build. They're amazing for such a tiny device, put out a fair puff of air and add a distinctively cool high RPM whine to the laser (they're supposed to go about 9000 rpm). I ended up going with a 30x30x10 mm Sunon 12v since I am using three 3.7v lithium ion AAs and the extra airflow is niiiice, but I will of course be using the tiny 20x20 mm Sunon in other projects.

please set us up with some pics of your build... this is some kind of drule material:thanks:

 

[Vaporizer]

Since the peltiers don't have specs I went searching.
Didn't find the exact one but did find a table that has sizes close and the voltages outputs.
Thermo Electric Modules, Peltier Elements, TE Modules, Heat Pump
I know this is like comparing an apple with maybe another type of apple. Not all TEC's may be consistent just because of size. The 8 x 8mm is showing 3.9v.

Ok, I'm going to get 2 and at least give them a shot. I don't have calibrated laser, but I should be able to get some numbers on output voltage and at least(hopefully) see if diff lens(AR coated) improve the output.
As with any hobby, experimenting has to be done by someone.
I'll post the results I get. :yh:aypal:

 

[boscoj]

for a homemade LPM? I just tried coating one with some graphite spray I have but only got .2 volts out of it . . .

pp received . . .

 

[boscoj]

guess I'm not used to such small multiple parts but oh well . . .

3 shipped on 9/08

3 shipped on 9/13

I think I shipped kiyoucan a sample 25mm fan on 9/15

and 4 shipped today, giface, modwerx, jander, haloblu and jeffrey . . .

I know I'm forgetting/double shipping someone . . .

thanks for playin though!!!

 

[kiyoukan]

for the diy lpm to get a good reading you need a heatsink on the other side of the tec.

 

[boscoj]

there is broham, maybe you should put on yer lasershades . . .

bad pic I know, I glued a peltier to 2 heatsinks and then sprayed it with a light coat of a graphite dry film lubricant Slip-Plate . . . all I had . . .

got nothing off the bare white ceramic face but got .2VDC from a Slip Plate coated tem . . . pretty sure any LPM using a tem has a substantial metal face to help distribute the energy . . . this does not . . .

SLIP Plate®

this was never intended to be a LPM sensor . . . but what the hell . . . only $3.95

for the diy lpm to get a good reading you need a heatsink on the other side of the tec.

 

[kiyoukan]

i know but by heatsink it needs a large thermal mass ie 1.5in aluminum block.
you need to make and increasing temp difference that little heatsink will heatup fast.
but yeah with those super cheap tecs you might be able to make the best and cheapest lpm out there besides your eyes of course.

 

[Vaporizer]

Now you tell me...lol
.2v? Hmmmmmmmm.....even the smaller one on the link I provided was better than that. :thinking:
I did see a pic that showed a hot & cold side for a peltier. Could it be you have the wrong side for the target or a good flat black might be better than graphite for heat retention? :undecided:
Some pretty good info here:
Peltier Cooler/Heater - Pooling Brainpower
I'll still experiment with them. Can't let just a few have all the fun.
A good heat sink will be needed to keep the reference side stable as possible.:yh:

What was the power of the laser in your test?
Graphite is conductive........did it bridge both faces?

 

[boscoj]

I'm not using these for LPM sensors, just chilling half dead flies . . .

i know but by heatsink it needs a large thermal mass ie 1.5in aluminum block.
you need to make and increasing temp difference that little heatsink will heatup fast.
but yeah with those super cheap tecs you might be able to make the best and cheapest lpm out there besides your eyes of course.

 

[kiyoukan]

ahh so they stay fresh for dinner?
I can wait to test out those fans.
Did you see my new thread? with a video of the new hosts?

 

[boscoj]

no, I understand these to be pure and simple tem heat pumps . . . they are advertised with no data what so ever, only dimensions . . .

It's a tiny peltier . . . burns and freezes my fingertips in about 2 seconds with a 7V input . . .

there are many reasons why laser amplitude measuring devices cost what they do . . .

this is an active cooling device with a thirst for amps . . .

Now you tell me...lol
.2v? Hmmmmmmmm.....even the smaller one on the link I provided was better than that. :thinking:
I did see a pic that showed a hot & cold side for a peltier. Could it be you have the wrong side for the target or a good flat black might be better than graphite for heat retention? :undecided:
Some pretty good info here:
Peltier Cooler/Heater - Pooling Brainpower
I'll still experiment with them. Can't let just a few have all the fun.
A good heat sink will be needed to keep the reference side stable as possible.:yh:

What was the power of the laser in your test?
Graphite is conductive........did it bridge both faces?

 

[boscoj]

there's a button you can press . . .

no I didn't

ahh so they stay fresh for dinner?
I can wait to test out those fans.
Did you see my new thread? with a video of the new hosts?

 

[boscoj]

I only tested that because you "vaguely" alluded to using it as an LPM . . .

These are high amperage cooling devices . . . hence the fans, heatsinks . . .

study was done before and after graphite spray and both polarities provided the same result . . .

again this is not a lpm sensor in my hands, it may be in someone else's. For me it's a peltier heat pump, a completely undocumented example . . . from an electronics surplus store.

the 445 laser in this "test" last put out 646 mw with a flexdrive set @ 850

Now you tell me...lol
.2v? Hmmmmmmmm.....even the smaller one on the link I provided was better than that. :thinking:
I did see a pic that showed a hot & cold side for a peltier. Could it be you have the wrong side for the target or a good flat black might be better than graphite for heat retention? :undecided:
Some pretty good info here:
Peltier Cooler/Heater - Pooling Brainpower
I'll still experiment with them. Can't let just a few have all the fun.
A good heat sink will be needed to keep the reference side stable as possible.:yh:

What was the power of the laser in your test?
Graphite is conductive........did it bridge both faces?

 

[Vaporizer]

Appreciate info and the offer to cancel. +1 Me vague?
I'll find something to do with them. Like putting one on each temple to keep my brain from frying! lol
Tell me the button sends the cold flies through the fans! :crackup:

 

[Toke]

I will be fun to see how much power I can get out of them.

How about an aluminium plate on one side, large enough to cover a coffee mug. On the other side 3 heatsinks and a fan.
With a little luck it will be able to power both the fan and an additional small LED.
It would look pretty cute next to a mug with a Stirling motor atop of it.