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Thread: Laser Physics Reliant 300WC

  1. #1

    Default Laser Physics Reliant 300WC

    After a very pleasant experience with user dsl_john, I am now the proud owner of this very nice laser
    DSC09352...JPG

    It had a loose connection in the interlock wiring, and needed some wiring to get the fan spinning, but it is now running quite happily making light that looks like this

    argon..JPG


    My main concern is, the power is a bit low (I measured about 110mw, of the 300mw 'rated' power). This is expected, the laser was sold as doing unknown power below spec, but I noticed that with slight tweaking of the optics I could get a bit more power, so there is hope! But i am curious, how the heck is one supposed to align a tube like this? I want my nice screws from the ALC-60X heads

  2. #2
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    Wheres the rest of the housing to this thing ? Btw i wanna see a vid of this laser!

  3. #3
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    My main concern is, the power is a bit low (I measured about 110mw, of the 300mw 'rated' power). This is expected, the laser was sold as doing unknown power below spec, but I noticed that with slight tweaking of the optics I could get a bit more power, so there is hope! But i am curious, how the heck is one supposed to align a tube like this? I want my nice screws from the ALC-60X heads [/QUOTE]


    The factory uses a jig with 3 screws at 120' apart that looks like a modified shaft collar.. Plus some other tooling. Alignment is by slight crushing of the tube, and does not drift much... Its not something you want to do without practicing on say a cyonics/uniphase/jdsu.

    You could call DZ Laser, not "our" PL DZ, and see how much they would want to refill it or tweek it. If you have a graph of tube voltage VS current they could probably tell you where you are on the life cycle..

    Steve
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    Default Congrats, m8! :)

    hey P -

    Bitchin, dude... very cool you got it going so quickly....

    ..Now, clearly, you know what you're doing, but I feel better at least saying something... make SURE you build a good, tight shroud for the airflow, since this one did not have one with it - the better airflow you can give it = longer tube life, and *probably* better performance / output...

    RE: 'alignment', well, be carefull if you do-decide to 'bend' the stem at-all, but I'd first check 'cleaning' on your OC - which will be very tricky, since the aperture is so tiny... but some good spectro-grade acetone, and a 'fine' cotton swab (cause clearly, you'll never get lens-tissue in there... with very-light pressure and a 'one-spin' gentle 'swirly' motion (...I know - unorthodox-method, but how-else, in this case??) you might see a good jump in power... I suggest this, cause this head was sitting in an 'unsealed box' for several years, collecting dust, and that, after coming out of a smokey casino / likely fog-laden, too....

    And when you get your 'hood' / airflow ducting worked-out, let this puppy run a good long while... might be a bit high-pressure...

    Quote Originally Posted by Experimentonomen View Post
    Wheres the rest of the housing to this thing ?
    Never 'came with it' - this is how it was 'ordered' from 'LPD', the manuf. of this system, cause it was installed in a larger projector, as an 'oem' laser... not-exactly sure of the 'rationale' for that-approach, but I suppose, #1, for better 'airflow' and #2, it was probably less-costly to get it, like this, than have them 'redesign' their system, to accommodate this as a 'custom-order' (no galvos, just laser and PCAO / back-plate controls, etc...) - still, why-not, then, just order a WL-head/psu from Laser Physics, direct?... really, I dunno.. wasn't my doing...

    Anyhoo, good to see you got 'er lit, and yes, like 'Experiment' said, PIX and/or FLIX!

    kit...
    J
    ....and armed only with his trusty 21 Zorgawatt KTiOPO4...

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    Default

    That's a cute litte unit, actually. Does it set the record for "Smallest Whitelight Ever"?

    Me want!

  6. #6

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    As to the fan shroud-
    I found a piece of metal that had the right size hole for the fan, and quickly kludged it together with some duct tape (the metal kind made for, you know, ducts). I assumed that you are supposed to suck air through the fins as with an ALC head, but it would be good to get a confirmation on that. Also, it seemed like it was pulling more air from the OC end than the HR end, as a result the filament end seemed to get pretty toasty--is that expected? The exhaust air was about the same temp as from my ALC head (maybe 150-160F), so I figure everything is working about how it should.

    As to the cleaning the OC-
    I noticed its pretty dirty, and was just wondering how the heck I am supposed to clean that--I will try cleaning it and see if things improve much. BTW-The spash in my spectrograph is not due do a dirty grating, that is what the output from the laser looks like.

    I let her run for maybe an hour yesterday at 50mw output power (was probably pulling 7-10a off the mains), but I am right in the middle of finals so my laser experimenting time is a bit limited by that. School is more important that lasers, school...more...important....

    As to the smallest, I have my doubts, I think there were some ALC-60x size heads that put out white, but it was usually only a few mw for things like confocal microscopy and the likes. This baby is probably the smallest one that makes enough power for show applications

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    email john at JK Lasers and ask him if he still has pics of his:

    www.jklasers.com

    Tell him SR says hello..

    Steve
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    Hey P -

    Quote Originally Posted by krazer View Post
    As to the fan shroud...I assumed that you are supposed to suck air through the fins as with an ALC head, but it would be good to get a confirmation on that.
    Yeah, the 'goal' is to REMOVE heat from the tube, adequately and consistently - you NEVER want to 'blow' on the tube to remove heat - 'blowing' is for cooling your fork-full of spaghetti at dinner ...so, good you have that straight - - I'd also comment that I am not certain that that fan is 'OEM' / truly-best for this laser, long-term... personally, I'd get a large, obnoxious squirrel-cage blower, ie:

    DSC02257..jpg

    (...of course, you'd have to rig a different shroud / baffle..) ... but you might be alright, as-long-as airflow is good...

    Anybody know the 'OEM-recommended CFM-requirements' for these? You could-then x-reference that CFM with the model# of this fan, and see how it 'compares'... since this was an 'as-is deal', I can't really promise that any of those 'aftermarket parts' I found with it are 'OEM-spec'... so, might be wise to do some 'homework' on that, capeach?

    Quote Originally Posted by krazer View Post
    Also, it seemed like it was pulling more air from the OC end than the HR end, as a result the filament end seemed to get pretty toasty--is that expected?
    How are you 'determining' that? - 'feel' or 'smoke-flow' test? Steve / DZ any other 'Reliant-experts' care to comment / advise?...

    Quote Originally Posted by krazer View Post
    As to the cleaning the OC-
    I noticed its pretty dirty, and was just wondering how the heck I am supposed to clean that--I will try cleaning it and see if things improve much. BTW-The spash in my spectrograph is not due do a dirty grating, that is what the output from the laser looks like.
    yeah, as I understand, this was in some Casino for ?? years, so I'd expect a nice film of smoke / fog-juice, hairspray, etc - like I suggested (I know it's 'unorthodox' using a cotton-swab, buuut..) get a skinny-one, and you can 'thin-out' the cotton - except for the very tip, which will do the 'wipe'... and again, ONE 'spin-style' wipe, per 'tip' - DON'T re-use or 'spin' multiple times, with the same tip... But I'm sure you knew that...

    Keep us posted...
    njoy..
    j

    PS - NO 'x-rentals' to any 'un-Varianced Djs', OK?
    ....and armed only with his trusty 21 Zorgawatt KTiOPO4...

  9. #9

    Default

    Comment on hot filament area was noted during cooldown, after letting the fan run for a few minutes the OC end was room temp, but the anode end was still hot to the touch (maybe 120-130f). I am not too worried about it, I just would like to make sure that there isn't supposed to be another baffle or the likes on him.

    As to the fan, I do worry its a little undersized, and was going to ask what the 'rated' airflow for one of these babies is, like I said the temps seem to be similar to what my ALC head was doing, so I know I am at least in the ballpark. The current fan is 350CFM.

    Sorry to leave you guys hanging, but I will have to hold back from any further updates till Friday, half my GPA for the quarter is being determined in the next 15 hours

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    If the filament end remains hot after you have turned of the discharge and ran the fan it's because the filament is still lit. Most of the time they stay lit even when the tube isn't lit, guess it saves strain on the cathode as it has to heat up and cool down less often?

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    Lightbulb 3 hole ring collar

    I have a 1000m that was under powered 650mw or so. After looking at how the tube looked like that of a JDSU head, I took a plastic rod and pushed on the end of the tube and the power shot up to 850mw. So after taking a dead uniphase hene apart I found the 3 hole rings, had to drill them out to fit on the reliant, but after it was all done it's now doing 1.2 watts!!!!
    And I have found that the clear acrilic paint brushes work great as a alinement tool just cut the metal part off and just push it on a drill to crurve it and that why your are safe from the high voltage.
    DJ Matt
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  12. #12

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    Thanks for the info!

    I have been wondering where to get a locking collar, I was pondering making one in the machine shop but haven't found the time. Do you happen to have any to spare?

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    Laser Warning Help wanted !!!

    hi everyone,
    I have a 300wc ,too.Non woking .
    could anyone tell me whats on TP1 to TP2.(testpoint or bridge)
    The tube is starting but there is no Voltage like 150Volt ,there is nothing.
    Ive checked out all the parts of the psu everything seems to be O.K. .
    If anyone could please take some photos of the connections on the board ,that would be great.
    The tube seems to be O.K. i see the plasma burning(when ticking sounds) and the kathode heats up.
    But all the time there is no voltage .
    Hope someone can help me.

    Thanks a lot .
    The last one turns off the internet!

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    Cool

    Ive got the 1000m, not sure if the boards are the same but I can take some pics if you want me to
    Now about the clicking.. Im not an expert, but with mine it does the same thing when you cold start it. The first time I start it, it will click click,so I just slowly turn the knob up untill it lights then turn it back down umtill it heats up,then I put it at the power I need

    About the rings,
    Ill look and see if I have some laying around, if not I would look on ebay for the JDSU HeNes with the 12v PSU built in. I call them the candle sticks..lol

    Hope that helps!
    DJ Matt
    Ion Laser Ministry
    "Laserist for Christ"

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    Thanks DJ Matt,

    My board was home repaired by someone who has no idea what he was doing,
    so I replaced all parts that were home made and than checked that there is no
    Voltage on the Tube (It will not start untill there is Voltage).So my Problem is that the
    passbank will not connect through .The starterboard-relay was bridged by the guy and thats why it was ticking (no original function)
    I know I have to check all the ICs and Interlocks ,have ordered them new and will replace everything , but one IC i did not find (labeled:HMI02 CS9240J) it seems to be for the regulation ,that could be the failure.Ill see soon.
    Some pictures from every place on the board would be nice.Thanks DJ Matt.

    If anyone has a non working Reliant-Laser(any modell has the same IC`s) please mail me PM ill buy it for parts.

    Thanks Matt, but my one wants a lot of repair before it will lase,and I would not repair an argon Laser if I dont knew how it has to work,its dangerous high voltage.
    But as the tube is gas intact it will be worth it.
    best regards
    Last edited by lasermarcus; 12-06-2010 at 16:21.

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    I know I have to check all the ICs and Interlocks ,have ordered them new and will replace everything , but one IC i did not find (labeled:HMI02 CS9240J) it seems to be for the regulation ,that could be the failure.Ill see soon.

    End quote

    CS9240J is part of a family of "hysteretic current controller" by the defunct Cherry Semiconductor.
    The last time I needed one, One Stop Laser Shop had the last ones on the planet.
    I cannot find my data sheet pdf for it, but it does have a enable pin, if I remember (3 years or more) correctly.


    I have two dead reliant boards that I hope to fix some day, but if you need parts let me know, one of the chips might still work.

    User DZ here has had success on Reliant psus, you might PM him and ask if he has drawn partial schematics. Look carefully at the interlock optocouplers and the circuits around them, one of them disables the HV, at on the last one I worked on, as there are several versions of the PSU. The interlock circuits are, not, intuitive or easy. One version needs a external 15V on the remote connector, and that is a 10 year old memory.

    I no longer have any documentation.

    This is the company that knows about Laser Physics. I have sent many people to them, but have never once heard if they have helped some one, but you can try. They are not related to user DZ mentioned above.

    www.dzlaser.com


    Good luck,

    Steve
    Last edited by mixedgas; 12-09-2010 at 17:24.

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    Thanks Steve for this very nice information .As I have repaired Galvodrives before I know about voltage- and current-checking circuits and thought something like that could be a funktion in front of my passbank.
    You gave me the security to be on the right way.
    Ive allready got the igniter-curcuit running , now its 4 times tick ,tick ,tick , then stop wait a little than again 4 times tick .
    The Kathode is glowing before ticking , but no konstant voltage on my meter.
    Now i will check the passbank circuit maybe a Thyristor or IC is blown .
    But before I will check the web for datasheeds if this Chip labeled HMI02 CS9240J than Ill try to enable this circuit for short time ,to know if the failure is in front or behind this IC.

    Some pics of my little beauty , and of the parts Ive taken out of this PSU.
    I think everyone will agree ,that are no original parts.

    Thanks for help !
    Attached Images Attached Images

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    Check the gate drive on the FETS.

    No gate, no start. Start duty cycle on a FET PSU is typically 80-90%

    Take a look at the Omnichrome switcher in SAM's Laser FAQ to get a idea of what is going on.

    Steve

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    O.K.
    I have a gate but no voltage between anode and kathode .From rectifier to kathode is a voltage and from rectifier to anode is just the 317volts from the caps.
    So I think it has to be somewhere in the transformer or in this area on the igniter.
    Maybe it will lase these days , thanks Steve for Help .
    Ill post some pics when it lasers!

    best regards
    Macus Hch

  20. #20

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    Hi there,
    I apologize for the slow response, life has been nuts lately. My laser is at school but I can try to take some pictures of it when I head up there next time, which should be within the next week or so.

    Does the red light on the back of the laser come on? Mine had a sketchy interlock connection and before the connection was repaired there was an intermittent failure which would turn that light off--and the failure mode was just as you mentioned, filament on, voltage on the caps, but no tube volts.

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    Hi,

    the red light is on when i close all needed connections.
    The internal green light ( gate drive ) is on after a few seconds , I dont get
    any lower voltage than 312V
    It will take a few days but im confident to get this little beauty running!
    some pics of my project
    Attached Images Attached Images

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    Wow 2 WCs...
    Anyone else got one they want to sell...
    I love to see them both running!!

    DJ Matt
    Ion Laser Ministry
    "Laserist for Christ"

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