Page 1 of 3 123 LastLast
Results 1 to 10 of 29

Thread: peltier driver

  1. #1
    Join Date
    Jul 2007
    Location
    west sussex uk
    Posts
    2,279

    Default peltier driver

    anyone know where i can find a driver for peltier cooler or a schimatic (excuse spelling) i want to drive 4 mini 17w peltiers

  2. #2
    Join Date
    Dec 2006
    Location
    Netherlands
    Posts
    964

    Default

    Quote Originally Posted by badger1666 View Post
    anyone know where i can find a driver for peltier cooler or a schimatic (excuse spelling) i want to drive 4 mini 17w peltiers
    Are you planning a quadruple red?
    some time ago I was looking into it, I found it not an easy accessible area. Maybe these bookmarks are of use:
    http://www.maxim-ic.com/appnotes.cfm...ber/3318/ln/en

    http://www.tetech.com/FAQ-Technical-Information.html

    look under `peltier-elementen':
    http://elektronicaonline.allepaginas.nl/

  3. #3
    Join Date
    Jul 2007
    Location
    west sussex uk
    Posts
    2,279

    Default thanks

    i got past the planning to build one, http://www.photonlexicon.com/forums/...ead.php?t=4688

    i want to put a mini peltier on top of each one rather than cool the main plate as thermal conductivity from the lasers to the plate is not very good due to havingti innsulate the lasers from ground to use robins drivers
    thanks for the info

  4. #4
    Join Date
    Jan 2007
    Location
    Florida
    Posts
    4,382

    Default

    Badger, that's a great Avitar!

    I hooked up a small peltier to about 1.5V at 230mA and it cooled right down pretty quick... no driver, just DC. Now If you want feedback, it'll get slightly more complicated.

  5. #5
    mixedgas's Avatar
    mixedgas is online now Creaky Old Award Winning Bastard Technologist
    Infinitus Excellentia Ion Laser Dominatus
    Join Date
    May 2007
    Location
    A lab with some dripping water on the floor.
    Posts
    9,477

    Default

    Learned the hard way trying to stack three peltiers in series, dont place them across a PSU at their maximum ratings, use some sort of controlled current source, as in their performance curve the max ratings result in them backing off on their cooling and starting some self heating.
    Woodward documents how to do drive them to their peak

    Google: "stephen woodward and peltier and EDN"
    three articles should come up.

    one:
    http://www.edn.com/index.asp?layout=...dustryid=47038

    two:
    http://www.edn.com/article/CA6505571...dustryid=44217

    schematic from two:
    http://www.edn.com/contents/images/6505571f2.pdf

    I hope you need to thaw your fingers in a good way! Dont lick a cold peltier....
    Steve
    http://www.edn.com/contents/images/6505571f2.pdf

  6. #6
    Join Date
    Nov 2007
    Location
    Sydney, Australia
    Posts
    600

    Default

    Quote Originally Posted by badger1666 View Post
    i got past the planning to build one, http://www.photonlexicon.com/forums/...ead.php?t=4688

    i want to put a mini peltier on top of each one rather than cool the main plate as thermal conductivity from the lasers to the plate is not very good due to havingti innsulate the lasers from ground to use robins drivers
    thanks for the info
    Hey badger1666

    The TEC should work as an insulator as both sides of a TEC are ceramic, so you should just be able to mount the LD mount directly onto the TEC and mount the assembly to the plate, this would also give additional benifit of a larger surface to distribute heat.

    Troy
    RTI Piko RGB 4 Projector
    CT6215 Scanners & CT 671 Amps; CT6210 & Medialas Microamps. GS124PD
    RGBLaser Systems 6000mW RGB Module - 638nm/445nm/532
    LD2000 Pro + QM2000.net + Beyond
    Etherdream + LSX

    Old Projector Build


  7. #7
    Join Date
    Dec 2006
    Location
    Netherlands
    Posts
    964

    Default

    Quote Originally Posted by badger1666 View Post
    i got past the planning to build one, http://www.photonlexicon.com/forums/...ead.php?t=4688

    i want to put a mini peltier on top of each one rather than cool the main plate as thermal conductivity from the lasers to the plate is not very good due to havingti innsulate the lasers from ground to use robins drivers
    thanks for the info
    Nice going !
    Which peltier elements did you get? I'm still in the `planning phase' of a double red. Got most of the parts though. But I didn't get past the 'peltier' planning stage So I'm looking forward to what you come up with!

  8. #8
    Join Date
    Jul 2007
    Location
    west sussex uk
    Posts
    2,279

    Default peltier

    hi zoof
    got them from http://www.greenweld.co.uk/acatalog/...eltier_76.html

    the 17w 20mm one's

  9. #9
    Join Date
    Feb 2005
    Location
    Switzerland
    Posts
    1,392

    Default

    Anybody ever used the MAXIM 1978 IC? It looks good : http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3527

    Single supply, +-3A output to the TEC, PID controller, monitoring outputs, all in one 48 pins package.

    I made a peltier controller some times ago for my dual Maxyz red, it was working but was not very stable, and heated a lot. Unfortunately it died some days ago, so I have to make a new one.
    But I can't find these MAXIM IC at a local electronic store... Maybe a group buy can be interesting? I think there's a min quantity to order at the web shop. It costs ~10$ for 1k units, we can certainly buy a lower quantity.

    They also have an evaluation kit, but I can't found any price.

    Also we can make an "open source" schematics with board layout, etc, so everybody here can use it...

  10. #10
    Join Date
    Nov 2007
    Location
    Sydney, Australia
    Posts
    600

    Default

    Quote Originally Posted by sbk View Post
    Anybody ever used the MAXIM 1978 IC? It looks good : http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3527

    Single supply, +-3A output to the TEC, PID controller, monitoring outputs, all in one 48 pins package.

    I made a peltier controller some times ago for my dual Maxyz red, it was working but was not very stable, and heated a lot. Unfortunately it died some days ago, so I have to make a new one.
    But I can't find these MAXIM IC at a local electronic store... Maybe a group buy can be interesting? I think there's a min quantity to order at the web shop. It costs ~10$ for 1k units, we can certainly buy a lower quantity.

    They also have an evaluation kit, but I can't found any price.

    Also we can make an "open source" schematics with board layout, etc, so everybody here can use it...
    Maxim actually do free samples for a lot of there products, so you maybe able to get two samples for nothing.

    Go to the ordering page for the device

    http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3527/t/or

    and there are two different samples you can order.
    RTI Piko RGB 4 Projector
    CT6215 Scanners & CT 671 Amps; CT6210 & Medialas Microamps. GS124PD
    RGBLaser Systems 6000mW RGB Module - 638nm/445nm/532
    LD2000 Pro + QM2000.net + Beyond
    Etherdream + LSX

    Old Projector Build


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •