Article View: sci.electronics
Article #4805Re: Kludged Laser Power Supply
From: Karri Tapani Palovuori
Date: Thu, 07 Jun 1990 12:40
Date: Thu, 07 Jun 1990 12:40
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1383 bytes
In article <808@sagpd1.UUCP> jharkins@sagpd1.UUCP (Jim Harkins) writes: >Too bad my He-Ne tube quit >lasing and I'm too cheap to buy another. Try immersing it into pure Helium (from balloons, for example). This is a known (desperate) method to repair 'aged to death' HeNe -tubes. If the reason for malfunction in your case (in your tubes case ;-) ) is the slow leaking of helium through the tube walls, this could work. A day or so should be enough to let some He 'leak' back into the tube. Remember that the atmospheric pressure (which you should use) is MUCH greater that the partial pressure of He in the tube, so also the change is much faster. >-- >jim jharkins@sagpd1 > >I hate to see you go, but I love to see you walk away. Karri Not in my case, I hope.
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arc1-ca.pugleaf.net!utzoo!attcan!uunet!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!rpi!uupsi!sunic!tut!kaakkuri!kp74615References:
<5395@jhunix.HCF.JHU.EDU> <2667547f-214.1sci.electronics-1@vpnet.chi.il.us> <5452@jhunix.HCF.JHU.EDU> <808@sagpd1.UUCP>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!rpi!uupsi!sunic!tut!kaakkuri!kp74615 From: kp74615@kaakkuri.tut.fi (Karri Tapani Palovuori) Newsgroups: sci.electronics Subject: Re: Kludged Laser Power Supply Message-ID: <13494@etana.tut.fi> Date: 7 Jun 90 12:40:50 GMT References: <5395@jhunix.HCF.JHU.EDU> <2667547f-214.1sci.electronics-1@vpnet.chi.il.us> <5452@jhunix.HCF.JHU.EDU> <808@sagpd1.UUCP> Sender: News@tut.fi Reply-To: kp74615@kaakkuri.tut.fi (Karri Tapani Palovuori) Organization: Tampere University of Technology, Finland Lines: 27