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Thread: Old Educational He-Ne

  1. #1
    Join Date
    Jun 2009
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    Mesa, AZ
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    1,170

    Default Old Educational He-Ne

    Newest arrival from Ukraine is this 1980 LG-209 He-Ne. Only laser I've seen with a periscope on the front, inside the cover. Both mirrors in it seem to be highly reflecting, so I think it's one beam path or the other.

    Click image for larger version. 

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  2. #2
    Join Date
    Mar 2015
    Location
    Cambridgeshire, England
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    397

    Default

    What's the 6.3V connection on the panel for?

  3. #3
    Join Date
    Nov 2007
    Location
    Scottish Highlands
    Posts
    231

    Default

    6.3v is the normal heater voltage for valves - I don't know whether that is the case here.

  4. #4
    Join Date
    Jul 2005
    Location
    Tampa Florida
    Posts
    495

    Default Dual output

    Looks to be cold cathode to me. Dual beam output Some special application? Looks like it may work?
    Phil Bergeron( AKA 142laser)

  5. #5
    Join Date
    Jun 2009
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    Mesa, AZ
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    Default

    The 6.3v goes through the cathode. It worked before shipment but I haven't tried it yet. The large aluminum tube is at the anode end.

  6. #6
    Join Date
    Jun 2014
    Posts
    11

    Default

    Oh nice. is that the one that was on eBay? I saw that. I thought it was really neat. I almost bought it.

  7. #7
    Join Date
    Jun 2009
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    Mesa, AZ
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    Default

    Yep. Sometimes, when I'm scrolling slowly down the list, my finger clickin' that button is like an electromagnet was switched on.

  8. #8
    Join Date
    Jun 2014
    Posts
    11

    Default

    Quote Originally Posted by Eidetic View Post
    Yep. Sometimes, when I'm scrolling slowly down the list, my finger clickin' that button is like an electromagnet was switched on.
    Oh believe me I know the feeling. Youve got some pretty interesting things in your collection Id love to have!

  9. #9
    Join Date
    Nov 2017
    Location
    Odessa, Ukraine
    Posts
    63

    Default

    Congratulations with a very nice find! Who did you buy it from, if it is not a secret?

  10. #10
    Join Date
    Jun 2009
    Location
    Mesa, AZ
    Posts
    1,170

    Default

    It came from Vannamore (Vannadiy).

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