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Thread: Laser Investment Opportunity Advice Needed!

  1. #61
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    Quote Originally Posted by Pianoman View Post
    I got it at the Northgate Creative Discovery Museum Science Theater, previously owned by News Channel 9. Were you correct?

    No Sir, I was incorrect. I was thinking the old Cumberland Science in Nashville. Creative Discovery is a neat place. Been there many times. I really like Barsamian's zeotrope sculpture, I can stand in that room for a long long time.

    I might be able to come down and check it out in a few weeks. SELEM is this weekend and the next two weekends after that are full as well.

    As for wiring it per weartronics; I can follow exact directions very well but lack the experience to make a decision on my own regarding power supply internals especially without a schematic.

    SELEM---you should try to make it there. Really.

    doug
    Last edited by mophead; 08-13-2009 at 09:05.

  2. #62
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    As for wiring it per weartronics; I can follow exact directions very well but lack the experience to make a decision on my own regarding power supply internals especially without a schematic.


    I am the person who would know. A 95 is not directly modifiable for single phase because of the buck boost transfomer in the front end, you have a roughly245V +10/-15 Volt 35 amp tube. failure to use the buck boost (aka a bypass) WILL overstress the passbank transistors and you would be replacing all 16 or 24 of them, and all of the control circuitry because the buck boost also generates current limited floating 130 VAC and 28VAC for the control and interlock circuitry. Its a linear, and you can only have about 30V across the passbank which is made of 2n6259s. As you turn up the current, in america, where we do not have ring mains, your pole pigs voltage will start to sag and the cathode voltage will drop as you turn the current up. At some point, that can cause damage if you dont watch it.

    If its a whitelight, the krypton in the gas fill lowers the firing voltage enough that a switcher, such as those made by ALC, can run the tube off single phase if you have more then 218 or so AC.

    They can run off single phase with a different power supply by a different manufacturer, to a watt or two or so. If you were in the Land of OZ like Weartronics with hot 245 V ring main feeds, yeah, no problems, there are ways to make PSUs that work for short periods of time. But here in the USA, its tricky and you need a oversized 220 feed and a phase converter or a specialized switcher PSU.

    Bring it to selem , we will have several lexels there and plenty of spare parts and a bunch of ion qualified people and ion newbie acolytes there to learn.
    And we have nearly unlimited 3P and the largest gathering of pro and hobbyist laserists this year. I'll bring a ADAT system as well, as will Dr Lava, so we can play your tapes etc.

    Pangolin will be there to help with your software. And I can check out your neos for you.

    Ask nicely and I might get you a schematic, its been known to take me a while, but I do send them eventually. whole manuals need photocopied, which is not that expensive, but is not cheap either.

    If you let me clean your optics and walk the alignment, you'll be able to get more value for your tube, as you will know its power, it will be tuned up to its max performance, and I do that for free only two days a year, and both are at SELEM.

    Steve
    Last edited by mixedgas; 08-13-2009 at 12:13.
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  3. #63
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    Quote Originally Posted by Pianoman View Post
    Yes I originally contradicted myself, thanks for pointing that out troll.
    No problem mate, it's the laser bug that gets to you.
    First it takes your college money, by this time next year you will have your wife, kids and granny on ebay LOL

    Jim

    ps. I must be a good troll to notch up 1k+ posts without getting found out

  4. #64
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    Ok im going to SELEM for the first time, can't wait. I was wondering, the laser came with hoses AND a water tank. Do I need the water tank? I'm not sure if it's part of the system or if they bought it for some other reason. Last question, do we need a table to sit it on?

  5. #65
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    Quote Originally Posted by Pianoman View Post
    Ok im going to SELEM for the first time, can't wait. I was wondering, the laser came with hoses AND a water tank. Do I need the water tank? I'm not sure if it's part of the system or if they bought it for some other reason. Last question, do we need a table to sit it on?
    With the water tank it is self contained. Otherwise you will need to hook up a water hose to the chiller and have it drain out again somewhere... Depends on how much room you have to bring stuff, just make sure it is empty water is heavy!

    -Adam
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    Laser (the acronym derived from Light Amplification by Stimulated Emissions of Radiation) is a spectacular manifestation of this process. It is a source which emits a kind of light of unrivaled purity and intensity not found in any of the previously known sources of radiation. - Lasers & Non-Linear Optics, B.B. Laud.

  6. #66
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    Hey pianodude , here's a coherent I90ma argon tube processed MIXEDGASS with a ALC 909 power supply . This supply was purchased from Nitelite lasers in California ! I believe it use 50 amps or 45 amps at 240 volt 2 phase. I ran it off the stove outlet in my house. Dean at Nitelite could probably mod your supply to run 2 phase. Not a big deal ,''I think''. I think you would need around 30k uf and a 2 phase bridge. I dont know just a guess. Anyway learn all you can about your laser and the responsibility that follows with it . A mid frame ion laser is a big jump !! That current and voltage will kill you instantaneously !!! It will be a closed casket ceremony, if you know what I mean !! Anyway, Be safe and enjoy !!!
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    Last edited by Laser Zone; 08-15-2009 at 11:35.
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  7. #67
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    That's cool that you were able to get it to run at home. By 2 phase did you mean single phase? I've never heard of 2 phase although I'm sure it exists. Most homes have single phase. Also, to everyone that was at SELEM, I found out why they put kill yellow optics inside my whitelight. This response concerning the issue came straight from Lexel and makes sense.

    "Typically the optics are coated to minimize the 568 nm line. The yellow line competes with the red wavelengths and lowers the overall power and balance.
    Broad band white light optics are very expensive,..."


    So yeah, there's the answer to why they put kill yellow optics in.

  8. #68
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    Quote Originally Posted by Laser Zone View Post
    Hey pianodude , here's a coherent I90ma argon tube processed MIXEDGASS with a ALC 909 power supply . This supply was purchased from Nitelite lasers in California ! I believe it use 50 amps or 45 amps at 240 volt 2 phase. I ran it off the stove outlet in my house. Dean at Nitelite could probably mod your supply to run 2 phase. Not a big deal ,''I think''. I think you would need around 30k uf and a 2 phase bridge. I dont know just a guess. Anyway learn all you can about your laser and the responsibility that follows with it . A mid frame ion laser is a big jump !! That current and voltage will kill you instantaneously !!! It will be a closed casket ceremony, if you know what I mean !! Anyway, Be safe and enjoy !!!

    His existing supply does not "mod" as it has a buck boost transformer on the input, ie a big linear brute force system that needs adjusted for line voltage changes.

    I'm getting pianoman a safe, clean, medical switcher and the correct cathode tranny.

    2 phase - bad nickname for 220 as it is not phase shifted, just inverted. True two phase would be two wires 90' out of phase and a common ground.



    Steve
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  9. #69
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    I'm in a bit of a fix. I went by the Science Theater today to check for the pangolin card. On the back of both office computers was a 5 pin and 25 pin connector side by side, but it appeared that the 25 pin connector was attached to a printer. I didn't take it apart to check because 1. The volunteer there asked me NOT to turn off the computer because she was using it. 2. The top wouldn't just "lift off" , it had several odd shaped screws and looked very difficult to remove, it fact it looked impossible. It appeared the only was to get inside would be to remove the back panel. Last, the owner that might actually know if the pangolin exists was on vacation until friday. I go off to college Saturday. This means it will probably be several weeks before I can get back down there to meet with the owner, or to take apart their computers. I really wish there was someone in the Chattanooga area that could go with me and that knows what they are doing.

  10. #70
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    Quote Originally Posted by Pianoman View Post
    I'm in a bit of a fix. I went by the Science Theater today to check for the pangolin card. On the back of both office computers was a 5 pin and 25 pin connector side by side, but it appeared that the 25 pin connector was attached to a printer. I didn't take it apart to check because 1. The volunteer there asked me NOT to turn off the computer because she was using it. 2. The top wouldn't just "lift off" , it had several odd shaped screws and looked very difficult to remove, it fact it looked impossible. It appeared the only was to get inside would be to remove the back panel. Last, the owner that might actually know if the pangolin exists was on vacation until friday. I go off to college Saturday. This means it will probably be several weeks before I can get back down there to meet with the owner, or to take apart their computers. I really wish there was someone in the Chattanooga area that could go with me and that knows what they are doing.
    Just a thought, could you check the hardware profile on the computer and see if it is listed in there? I am not sure what it would be listed as but it should show up if installed...

    -Adam
    Support your local Janitor- not solicited .

    Laser (the acronym derived from Light Amplification by Stimulated Emissions of Radiation) is a spectacular manifestation of this process. It is a source which emits a kind of light of unrivaled purity and intensity not found in any of the previously known sources of radiation. - Lasers & Non-Linear Optics, B.B. Laud.

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