FS: HeNe's Cheap :)

[daguin]

I recently picked up a salvage lot of HeNe lasers. I went through them trashing the dead ones, repairing those that could be repaired, and pulling the working tubes from irreparable housings. These have all been tested and run with a 1750VDC PSU. They are all in the 1-3mW range. These will each fit into a medium flat rate priority box.

The tubes inside look like the long, thin, bare tube in the picture. When contacting me, please mention if you want a bare tube unit or one in a housing.

They are offered here at $20 each, shipped in the US.

These are offered without PSU's. You can get 1750VDC PSU's on eBay regularly. I have a limited number of "lab-style" PSU's available at $75 each.

In housings: 8, 7, 6, 5, 4, 3, 2, 1

Bare tubes: 4, 3, 2, 1

Peace,
dave

 

[Jimmymcjimthejim]

I'm interested in the bare tubes, but first I need to know how long they are. My project box can fit a 7-inch tube from end to end. Do you have any that fit that size?
Thanks,
Jimmymcjimthejim

 

[mfo]

I'm interested. Are they all the same Wavelength?

Edit: I want one in the housing. The second one from the right looks cool

 

[Scotty 757]

Just posting so I get an email when dave posts. lol

 

[JLSE]

Got any dead ones in the alloy housing? Ive got many working tubes, only one with the black case.

 

[daguin]

I'm interested in the bare tubes, but first I need to know how long they are. My project box can fit a 7-inch tube from end to end. Do you have any that fit that size?
Thanks,
Jimmymcjimthejim

The shortest one is 6 inches long. The others are over 8 inches

I'm interested. Are they all the same Wavelength?

Edit: I want one in the housing. The second one from the right looks cool

Yes. These are all 632nm (red)
The one farthest to the right has a longer housing, but the tube is the same. The rest of them are all the same model. A couple of them have shorter cords, though

Got any dead ones in the alloy housing? Ive got many working tubes, only one with the black case.

I have 5 empty housings:
one @ 10in (L) x 1.75in (dia)
three @ 9.25in (L) x 1.25in (dia)
one @ 6.75in (L) x 1.25in (dia)

They do NOT all have all the end caps. If any of these will work for you, I'll match up what I have in the parts bag, but you may have to fabricate one or both end caps.

Peace,
dave

 

[brando132]

Dave, do you have any with PSU's under 50$? Or know where I can get some?

Sorry if it's nooby but I can't seem to find any.

 

[KiLLrB]

I like the shape of the top 2 bare tubes kinda neet looking... Too bad they have too much metal obstructing the plasma. I like to see as much plasma as possible

 

[daguin]

Dave, do you have any with PSU's under 50$? Or know where I can get some?

Sorry if it's nooby but I can't seem to find any.

Search "HeNe" in eBay and be patient. You will eventually get a PSU for under $50.

I like the shape of the top 2 bare tubes kinda neet looking... Too bad they have too much metal obstructing the plasma. I like to see as much plasma as possible

Those two are wired to the terminals sticking out the "rear."

If you want big exposure, I have some 14in bare tubes, with ~10in of plasma exposure for $40 plus shipping

I also still have a bare tube, green for $160
http://laserpointerforums.com/f39/daguins-epic-sale-48162.html

Peace,
dave

 

[KiLLrB]

Id like to have that green tube but unfortunately I have some tickets to pay for and that drained my paypal savings As soon as I have some more funds I might PM you about that 14" red. What is the wattage on it again?

Also, can you give me a round about estimate for parts cost on that HeNe lamp you built minus laser and psu? I really would like to have a HeNe lamp for my computer room

 

[brando132]

Do those 14" have more powerful output?

 

[KiLLrB]

Do those 14" have more powerful output?

The way I understand it and have observed is... Generally the longer the more power output but I am just ASSuming. Keep in mind the longer the more juice it needs.

Dave correct me if i am wrong :tinfoil:

 

[brando132]

How many of those 14" bare tubes do you have Dave?

 

[daguin]

Id like to have that green tube but unfortunately I have some tickets to pay for and that drained my paypal savings As soon as I have some more funds I might PM you about that 14" red. What is the wattage on it again?

Also, can you give me a round about estimate for parts cost on that HeNe lamp you built minus laser and psu? I really would like to have a HeNe lamp for my computer room

The output on the 14in red is <13mW (mm).

The lamp that I made was VERY inexpensive.

The base is a simple plastic project box from Radio Shack with some old two-pound fishing weights in it. The tube covering the bottom is just black PVC "drain" pipe. The shield behind the lamp is the "back" 1/2 of the original housing. I split the housing with a cutting wheel on a Dremel. I glued it all together and spray painted it with "high-temp" flat black paint.

The wire to the Alden plug and PSU exits the rear of the box. The PSU sits under the desk.

Others have done them "prettier", but I doubt they have done them cheaper

How many of those 14" bare tubes do you have Dave?

I have two more of these available

Peace,
dave

 

[brando132]

Would this work for those HeNe's in the OP, or the 14"?
HeNe Laser Drive 4009479 Power Supply Brick 115/230V - eBay (item 200445005138 end time Mar-30-10 19:54:41 PDT)

 

[daguin]

Would this work for those HeNe's in the OP, or the 14"?
HeNe Laser Drive 4009479 Power Supply Brick 115/230V - eBay (item 200445005138 end time Mar-30-10 19:54:41 PDT)

At 1750VDC you are right at the bottom edge, but they will run on it.

The 14in bare tube "wants" ~2.1KVDC, but I have run them with 1.75KVDC

Keep in mind that the bare tube HeNe's will need ballast resistors inline. The tubes in the housings include the resistor in the housing

Peace,
dave