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Old 05-17-2009, 06:54 PM #1
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Smile a plethora of hene's

I decided to test all my hene tubes today, I thought I had at least 40 of them, but there were only 33 in the box. Out of the 33, 8 of them were bad.
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a plethora of hene's-1.jpg   a plethora of hene's-2.jpg   a plethora of hene's-3.jpg   a plethora of hene's-4.jpg   a plethora of hene's-5.jpg  

a plethora of hene's-6.jpg   a plethora of hene's-7.jpg   a plethora of hene's-8.jpg  


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Old 05-17-2009, 07:06 PM #2
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very cool Would you be willing to sell any with a PSU?
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Old 05-17-2009, 07:23 PM #3
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They may be all spoken for, I dont know yet, but if not, then I may sell them.
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Old 05-17-2009, 07:27 PM #4
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Do you mind me asking how you have so many?
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Old 05-17-2009, 09:56 PM #5
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It rains them from time to time, and I keep having to pick em up off the lawn, no just kidding. lol.I did a weeks worth computer work for them and some other laser stuff.
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Old 05-18-2009, 12:29 AM #6
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Man! If you could combine all those into one beam you'd get around 20mW!!!!!!!

It'd be nice to go outside when it's raining though and catch a few on your tongue. No wait.... That'd be stoopid. You might get one in the eye. No, wait again... THAT'S what laser goggles are for!!!

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Old 05-18-2009, 01:40 AM #7
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lol! You actually made me laugh out loud with that!
there are about 32 good tubes

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Old 05-18-2009, 04:06 AM #8
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Quote:
Originally Posted by disma View Post
Out of the 33, 8 of them were bad.
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there are about 32 good tubes
Ow Ow! my brain!
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Old 05-18-2009, 04:35 PM #9
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I did have several more in with other stuff. have tested them all now. there are 32. The aditional ones are a slightly different tube, have the same model #, they dont have the built in ballast resistor.
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Old 05-18-2009, 08:34 PM #10
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Nice collection. What PSU are you using?
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Old 05-18-2009, 10:53 PM #11
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I was using a coherent ps, The label has been partialy removed, so I cant tell you the model no.
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Old 06-04-2009, 01:14 AM #12
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If anyone wants to buy one of these, get ahold of heruursciences. I have shipped them all to him in return for a fiber laser he has.

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Old 06-04-2009, 01:16 AM #13
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I'll trade you my wife for two of those working or not
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Old 06-04-2009, 09:02 PM #14
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nah, if she doesnt like lasers, we would not get along! lol!
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Old 06-05-2009, 01:44 PM #15
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i made a spectrograph of a 546.8 HeNe laser showing the fluorescence in the cavity :

i don't remenber how to choose a particular wavelenght, is this with the lenght of the cavity ?
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Old 06-06-2009, 05:41 PM #16
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Thats cool, I think the coating on the mirrors is what selects the wavelength, but it may also have to do with the cavity length.

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