Page 1 of 2 12 LastLast
Results 1 to 10 of 16

Thread: 9v power supply - where??

  1. #1
    Bradfo69's Avatar
    Bradfo69 is online now Pending BST Forum Purchases: $47,127,283.53
    Join Date
    Jul 2010
    Location
    Wilmington, DE
    Posts
    5,971

    Default 9v power supply - where??

    Hey all. I can't believe this is that hard but, I need the help of some of the electronic guru's on here. I am looking for a 9 volt power supply to power 3 little RGB single mode diodes that are going to be built into a small projector. Rob Stanley and I set them up at the UKLEM and we set his drivers for 9 volts and they're each set at around 200mA. In searching... all I'm finding are wall worts or... if it's a small caged supply like I'd like - what little I'm finding is back ordered for weeks or months. Meanwell has one but it puts out like 11.2 amps, is huge and, is back ordered until the end of May. I'm thinking that's overkill. Should this be this hard??? I think I'm searching using the right terminology but, sure as heck aren't finding much.
    PM Sent...

  2. #2
    Join Date
    Nov 2008
    Location
    Cleveland Ohio
    Posts
    2,156

    Default

    12v supply. Lm7809. Add a heatsink. Two caps done. Iím doing the same with Lovell drivers. Ps never ever ever put 9v to the modulation line or puff.

  3. #3
    swamidog's Avatar
    swamidog is offline Jr. Woodchuckington Janitor III, Esq.
    Join Date
    Nov 2006
    Location
    santa fe, nm
    Posts
    1,545,365

    Default

    how about one of these:

    https://www.mouser.com/ProductDetail...E5Unjelg%3d%3d

    Quote Originally Posted by Bradfo69 View Post
    Hey all. I can't believe this is that hard but, I need the help of some of the electronic guru's on here. I am looking for a 9 volt power supply to power 3 little RGB single mode diodes that are going to be built into a small projector. Rob Stanley and I set them up at the UKLEM and we set his drivers for 9 volts and they're each set at around 200mA. In searching... all I'm finding are wall worts or... if it's a small caged supply like I'd like - what little I'm finding is back ordered for weeks or months. Meanwell has one but it puts out like 11.2 amps, is huge and, is back ordered until the end of May. I'm thinking that's overkill. Should this be this hard??? I think I'm searching using the right terminology but, sure as heck aren't finding much.
    suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.

  4. #4
    Bradfo69's Avatar
    Bradfo69 is online now Pending BST Forum Purchases: $47,127,283.53
    Join Date
    Jul 2010
    Location
    Wilmington, DE
    Posts
    5,971

    Default

    Quote Originally Posted by swamidog View Post
    Ding, ding, ding. No more calls. We have a winner. Yes, that's along the lines of what I was trying to find. I think I was even on Mouser's page but may not have been entering the right search info. I'll order one shortly. Thanks!

    And thanks Ed for your PM but, that's the same sort of wall wortish kind of thing I didn't want to stick in the projector.
    PM Sent...

  5. #5
    Join Date
    Nov 2008
    Location
    Cleveland Ohio
    Posts
    2,156

    Default

    I think there is a pot in most meanwell supplies too that you can adjust the voltage.

  6. #6
    Bradfo69's Avatar
    Bradfo69 is online now Pending BST Forum Purchases: $47,127,283.53
    Join Date
    Jul 2010
    Location
    Wilmington, DE
    Posts
    5,971

    Default

    Quote Originally Posted by kecked View Post
    I think there is a pot in most meanwell supplies too that you can adjust the voltage.
    Yes, in many of them I believe you can although, the ones I looked at, didn't fall in the 9v range. You could turn up a 5 and turn down a 12 but not quite to 9. That doesn't mean there aren't ones that do - just the ones I saw didn't.
    PM Sent...

  7. #7
    Join Date
    Nov 2008
    Location
    Cleveland Ohio
    Posts
    2,156

    Default

    If you hack saw off 1/3 of 12v supply youíll be left with a 9v......

    change the reference voltage. Just a resistor. Usually easy once you find it.

  8. #8
    Join Date
    Dec 2008
    Location
    Canada
    Posts
    972

    Default

    What's wrong with a switching 9V Wall Wart ???

    Jerry
    See the LaserBee II and all other LaserBee LPM products here....
    All LaserBee Laser Power Meter Products

    New 3.2Watt RS232/USB LaserBee II LPM REVIEW


    Always in stock and ready to ship....
    Subsidary:-Pharma Electronic Solutions

  9. #9
    Join Date
    Nov 2008
    Location
    Cleveland Ohio
    Posts
    2,156

    Default

    they only work with walls.....🙄

  10. #10
    Bradfo69's Avatar
    Bradfo69 is online now Pending BST Forum Purchases: $47,127,283.53
    Join Date
    Jul 2010
    Location
    Wilmington, DE
    Posts
    5,971

    Default

    Quote Originally Posted by lasersbee View Post
    What's wrong with a switching 9V Wall Wart ???

    Jerry
    Technically probably nothing but, if you're going to build a nice projector, my preference would be putting in a proper power supply over jury rigging an ac wall pack. Granted, most people don't see inside the case but, I'd know it was sorta ghetto inside if I did that.
    PM Sent...

Posting Permissions

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