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  • laserist's Avatar
    Yesterday, 14:54
    laserist replied to a thread CYGN-B in The Lounge
    I'm fairly sure Greg just wants to build the ramp shaper from Laser Image's spiral board. Maybe That Corp's 340P14-U would work for the AD811 AD821 pair...
    271 replies | 21248 view(s)
  • mixedgas's Avatar
    Yesterday, 14:04
    mixedgas replied to a thread CYGN-B in The Lounge
    Getting data on the 43xx series of Burr Brown chips usually requires help from the Ti Archives. They came through for me on three 43 series parts in the past. It took a while. Steve
    271 replies | 21248 view(s)
  • laserist's Avatar
    Yesterday, 08:05
    laserist replied to a thread CYGN-B in The Lounge
    I found this in a scan of an old Analog Devices newsletter:
    271 replies | 21248 view(s)
  • gagalight2011's Avatar
    Yesterday, 05:36
    Hi Guys, Have a nice day We made a lasershow, share here. Anybody wants to know more information, please contact us without any hesitation. best regards
    0 replies | 60 view(s)
  • laserist's Avatar
    Yesterday, 00:44
    laserist replied to a thread CYGN-B in The Lounge
    Yes, Laser Images used AD533 chips originally on the Mark 4, designed the 2QMM circuit and used it in many places, and built up the z axis rotators for the Mark 6 using AD532 chips
    271 replies | 21248 view(s)
  • Greg's Avatar
    11-22-2020, 21:58
    Greg replied to a thread CYGN-B in The Lounge
    D841 or AD811 on: October 12, 2007, 10:21:54 PM Anybody know what an AD841 or an AD811 is? I'm trying to figure out some pre-amps that use these. They are 6 legged devices looking like a small transistor. The power supplied is positive only, 15V. I thought maybe they were dual transistors...
    271 replies | 21248 view(s)
  • Greg's Avatar
    11-22-2020, 21:57
    Greg replied to a thread CYGN-B in The Lounge
    The sillyscope agrees: color mod 2 is bipolar. Do I understand correctly from previous posts that that the 4QMM is either AD533 or AD532 chips, and the 2QMM is a two quadrant multiplier module that Laser Images designed? I'm going to post a discussion found online that mentions the AD811 and...
    271 replies | 21248 view(s)
  • gagalight2011's Avatar
    11-22-2020, 18:53
    Hi Hak, Have a nice day Thanks a lot for your inquiry. 1: Could you please tell me the quantity you want ? I will check the shipping cost by express to your door. 2: Yes, It is Analog 100k. So the color is very beautiful .
    10 replies | 295 view(s)
  • gagalight2011's Avatar
    11-22-2020, 18:46
    Thanks again. Yes, you can get one for testing. We appreciate greatly that the people give us professional suggestion.
    10 replies | 295 view(s)
  • gagalight2011's Avatar
    11-22-2020, 18:42
    Hi Ron, have a nice day Thanks a lot for your question. 1:We have FDA certified which we made in China,but I am not sure if it is whole or not. I will send you by PM,when it is needed. Tks. 2: the information we wrote are ture. My friend. best regards
    10 replies | 295 view(s)
  • masterpj's Avatar
    11-22-2020, 16:36
    dming you. ....
    1 replies | 136 view(s)
  • laserist's Avatar
    11-22-2020, 15:09
    laserist replied to a thread CYGN-B in The Lounge
    I think color mod 2 was bipolar so amplitude modulation would have been interesting. With a 4qmm you could either modulate with the reversal or put a precision rectifier in the signal path. I want to build a box to do laserium style color mod slash chopper with The Radiator - I'll post it when and...
    271 replies | 21248 view(s)
  • laserist's Avatar
    11-22-2020, 15:01
    laserist replied to a thread CYGN-B in The Lounge
    There was exactly one 4302 in the Mark 6. It was one of the mods that were done over the years. It was a ramp shaper for the spiral ramp signal. I didn't like the shaped look and almost always kept the control at 5 to yeald a linear look. I have one of them, I'll put it in the next shipment...
    271 replies | 21248 view(s)
  • Greg's Avatar
    11-22-2020, 12:49
    Greg replied to a thread CYGN-B in The Lounge
    That's good to know, thanks. Even without regard to function, those iconic illuminated buttons may be the most attractive element to appear on any control desk. Other News: With fresh gratitude to the small group of elite contributors (of knowledge and hardware), I can announce that I have had...
    271 replies | 21248 view(s)
  • ronhip's Avatar
    11-22-2020, 12:46
    ronhip replied to a thread SELLING : RGB1w laser light from gagalight in Buy/Sell/Trade
    Another question: Are these projectors CDRH/FDA certified so they will make it through customs in the U.S.? Is this true of all your projectors? Thank you in advance for any additional info. Ron
    10 replies | 295 view(s)
  • ronhip's Avatar
    11-22-2020, 12:40
    ronhip replied to a thread CYGN-B in The Lounge
    Brian, I remember, as you do, that the 6th button for CM2 applied FM to CM1. I believe the source for the FM signal was either the sum of the CYGN-A or just the C oscillator of CYGN-A. Hard to remember these details after 22 years NOT performing shows! The wiring may be in the blue-binder. I...
    271 replies | 21248 view(s)
  • ronhip's Avatar
    11-22-2020, 12:32
    ronhip replied to a thread CYGN-B in The Lounge
    Hey, Brian, I've never seen one of these unpotted. I'll add the photo to the archive. I think I still have a few of these around somewhere in my Laserium detritus. Ron
    271 replies | 21248 view(s)
  • laserist's Avatar
    11-22-2020, 09:34
    laserist replied to a thread CYGN-B in The Lounge
    The six buttons over the beam torquer knob on the Mark 6 control panel selected the CYGN-A Osc 1, Osc 2, Osc 3, Spiral ramp, and color mod 2 ramp to the color mod 2 gain control. The last switch ( as I recall) killed the color mod 2 output and shunted it into the color mod 1 Vco input for frequency...
    271 replies | 21248 view(s)
  • kecked's Avatar
    11-22-2020, 09:08
    kecked replied to a thread SELLING : RGB1w laser light from gagalight in Buy/Sell/Trade
    like I said if I tried Chinese it would even worse! looks like a seriously great deal. I cant even buy the diodes for the total.
    10 replies | 295 view(s)
  • laserist's Avatar
    11-22-2020, 07:12
    laserist replied to a thread CYGN-B in The Lounge
    The spiral, multiplier, multiplier summing, multiplexer multiplier, and fixed cycloid boards all used a two quadrant multiplier module that Laser Images designed. I assume they went to the trouble because the AD533's they used on the audio mod board needed three trim pots, were a pain to adjust,...
    271 replies | 21248 view(s)
  • RandomTomUK's Avatar
    11-22-2020, 03:42
    Afternoon laser fans I have to offer in Reading UK an old skool laserscope 40w 532nm KTP / 100w 1064nm Nd:YAG (ratings from safety sticker on front) laser unit that I need to get rid of due to selling up my house and storage. It originally belonged to UK member RobotArmy (Ryan) before he moved...
    1 replies | 136 view(s)
  • lasermaster1977's Avatar
    11-21-2020, 22:17
    Thanks. The big difference between yours and mine is that yours is true animation while my color modulated "swirls" were generated by an HP mini-mainframe on a hires vector color display and shot as a time-lapse with a 35mm camera at a university. We couldn't do that kind of linear color mod with...
    386 replies | 87837 view(s)
  • Greg's Avatar
    11-21-2020, 21:34
    Greg replied to a thread CYGN-B in The Lounge
    I certainly noticed those (photo). They're in a bank vault for now. I figure might as well make the colormod2 signal available to the axis summing input of the CYGN-B. Attached schematic shows the plan for this.
    271 replies | 21248 view(s)
  • james's Avatar
    11-21-2020, 21:31
    Very nice! .......................
    386 replies | 87837 view(s)
  • lasermaster1977's Avatar
    11-21-2020, 21:00
    So true. I did a little bit of math back in the 80's, as I said it reminded me of something. Everything new is old. Keep up the outstanding work!
    386 replies | 87837 view(s)
  • james's Avatar
    11-21-2020, 20:41
    It's a shame so many people seem to be so intimidated by a little math. Once you've spent some 40+ years relentlessly pursuing it, it's really no big deal.
    386 replies | 87837 view(s)
  • lasermaster1977's Avatar
    11-21-2020, 20:37
    Ah, yes, the power of the increment!
    386 replies | 87837 view(s)
  • laserist's Avatar
    11-21-2020, 20:25
    laserist replied to a thread CYGN-B in The Lounge
    No, the spiral ramp circuit used AD811 & AD821 matched dual transistors which are pure unobtainium today. The thing about the spiral circuit was it had a signal where both the up ramp and down ramp rates were programmable and an inverse of that signal, but also a reset. The audio mod use a (again)...
    271 replies | 21248 view(s)
  • james's Avatar
    11-21-2020, 20:03
    Thanks Dean. You and I both have 40+ years of experience with rendering math into images. This stuff draws on every bit of that experience and then some! I've learned so much in these past few months. I hope others will check it out and learn how it works so they can express themselves...
    386 replies | 87837 view(s)
  • Greg's Avatar
    11-21-2020, 19:44
    Greg replied to a thread CYGN-B in The Lounge
    I wonder if any of the spiral generating or audio modulation sub-systems of the mark VI used a sweep circuit similar or identical to the colormod2 core.
    271 replies | 21248 view(s)
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