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Old 12-11-2009, 04:58 AM #1
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Default JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

Just a question... see if anyone knows:

I have a JDSU 1145P HeNe tube... I have a 1135P and 1674P coming. I know the 1218-1 PSU (3700v, 6.5ma) was designed strictly for the 1145P...

I heard that HeNe tubes were pretty resiliant (but there's the ballast to think about). I know the 1135P is 3100v@6.5ma, and the 1674P is 2700v@5.0ma.

Would it be possible to just -test- the 1135P and 1674P heads on the 1218-1 PSU without damaging them?

Otherwise, I guess I'm going to have to look for a JDSU 1216-1 and 1208-1.


(Reader's Digest version: 3700v JDSU HeNe power supply. Will it hose 3100v and 2700v rated tubes?)

Really what I want to do right now is just test the heads and make sure they work; not run them for extended periods of time.


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3392nm:REO LHIP HeNe 2mW ∙ 980nm:OLIKE 155mW

808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW

Last edited by aryntha; 12-11-2009 at 05:14 AM.
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Old 12-11-2009, 05:21 AM #2
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Default Re: JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

They will be fine

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Old 12-12-2009, 02:40 PM #3
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Default Re: JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

HeNe power supplies have a compliance range, below that there is too much voltage over the power supply instead of the tube. It would dissipate more power, that's for sure. My guess would be a tube with 1000v lower voltage would be too low.
But I'm unfamiliar with these power supplies, so I can't say how far they will go without problems, only guess.
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Old 12-17-2009, 08:37 PM #4
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Default Re: JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

Hmm. The 1218 - It'll light my 1145P, both of my 1135Ps, just fine.. But my 1674P -- no go. I just got the 1674P and the seller promised it was tested/working..

I am getting a 'proper' power supply (and a 1676P) from Sam Goldwasser tomorrow...
..but would "too much power supply" cause the tube not to light?

Or, are the chances that the guy sent me a bum head?

Or could the power supply have killed the head that fast?
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808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW

Last edited by aryntha; 12-17-2009 at 08:40 PM.
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Old 12-17-2009, 08:50 PM #5
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Default Re: JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

HeNe laser tubes are quite robust (electrically I mean), only running them in reverse for more than a few minutes or running at a too high currect too long can damage them as far as I know. Depending on current this is from a few tens of minutes to hours. Power supplies die way sooner.

A 1674P, is that a polarized green tube? It should work just as easy as the 1135P I think. Does the tube try to start or nothing at all?
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Old 12-17-2009, 09:40 PM #6
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Default Re: JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

Yeah, it's a polarized green.. Was hoping to get a green, and this was an ebay guy who said it was tested. (Was packed pretty decently too.)

No try, nothing. Not a flash, and no glow inside the window. Nothing at all.

There's also a 'click' that happens in the PS when the other tubes start -- this one, nothing. I wait about 15-20 seconds; the others start within 5.

I don't think the tube is cracked or broken inside.
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3392nm:REO LHIP HeNe 2mW ∙ 980nm:OLIKE 155mW

808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW

Last edited by aryntha; 12-17-2009 at 09:44 PM.
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Old 12-17-2009, 11:06 PM #7
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Default Re: JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

hmm. strange.

Looking into the aperture (with goggles, but only 0.75mw anyways) -- it is flickering. There's a pulsing dim red light... Could that mean anything?
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3392nm:REO LHIP HeNe 2mW ∙ 980nm:OLIKE 155mW

808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW

Last edited by aryntha; 12-18-2009 at 01:52 AM.
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Old 12-18-2009, 07:08 PM #8
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Default Re: JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

Sounds like the current output of the PS isn't high enough.
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Old 12-18-2009, 09:05 PM #9
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Default Re: JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

See, that's odd, because the 1674P requires 5.0ma @ 2100v, whereas the power supply (1218-1, for my 1145P) is rated at 6.5ma @ 4100v. Yes, Too much. But shouldn't kill the tube... and from what i'm understanding: should light it.

Waiting for a 5.0mA 2100v power supply on UPS today but, I'm betting on it having a cracked bore
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3392nm:REO LHIP HeNe 2mW ∙ 980nm:OLIKE 155mW

808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW

Last edited by aryntha; 12-18-2009 at 09:30 PM.
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Old 12-18-2009, 10:01 PM #10
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Default Re: JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

If it lights, it's not cracked. If it doesn't stay on, it can be a gas problem, a power supply problem, or even something else. You have a tube requiring 2000v less than the power supply gives, it may just shut off because it senses a short. Give it a shot with the other power supply. But even on a start pulse some green would come out. Microwatts, but easily visible.
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Old 12-18-2009, 11:07 PM #11
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Default Re: JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

See, I just got the corret PS from Sam.

The tube I got from him (1675P) works *great*.

This 1674P, though -- with this supply, (exact same ratings and reqs as the 1675P) -- nothing but a dull violet glow from behind the mirror. No green.

Solid dull violet glow. Tube stays lit. (I've had it lit for about 5 minutes now with the new PS.) -- Not the faintest trace of green light. (Doing this in a darkened room.) Not even a microwatt.

Strange...
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685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW
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Old 12-19-2009, 12:45 PM #12
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Default Re: JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

The discharge spectrum is not visible because of the mirror reflecting a certain range of wavelengths. It's a typical black tube head, right? Maybe you can get one of the caps off to see the discharge of the tube. That way, you can view the spectrum and check if it is an gass fill problem. If it is, the seller sold knowingly a dead tube, gas fill only changes with years. Green HeNe's are even more critical on the gas fill. The discharge spectrum for a green HeNe is probably slightly different than for a red HeNe, but a very purple discharge is bad in any case. The mirrors are made for green, so they pass red and blue, that makes purple, so don't be worried about what you view through the mirrors, it's not representative.

More probable would be that the shipping was bumpy and that the mirrors are out of alignment. Here also you can remove the front and end caps and gently (!) push with something isolating against the mirror mounts.

In both cases: there's a fragile tube in the head, be very carefull! And there's HIGH voltage in there, probably on the mirror mounts itself. Only bring tools that are properly shielded close to the head, and remember that it can keep it's charge after it's powered off.
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Old 12-19-2009, 06:37 PM #13
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Default Re: JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

It's a typical black tube head yes. Compared to my 1675P, the discharge is dim, and sometimes 'sputters'.

So I do believe you're right about the gas fill problem. The mirror mounts I don't believe can be changed or adjusted; this appears to be a one piece deal.

(So basically, it's worthless, right?)

The seller was an ebay seller; guaranteed it against being DOA with 30 day return policy, but now is not responding any further. (Have sent 4 messages in 4 days, with no response.)
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3392nm:REO LHIP HeNe 2mW ∙ 980nm:OLIKE 155mW

808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW

Last edited by aryntha; 12-19-2009 at 06:39 PM.
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Old 01-09-2010, 11:11 AM #14
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Default Re: JDSU 1218-1 Powersupply+1145p.. Will it damage my other HeNe's?

Quote:
Originally Posted by aryntha View Post
See, I just got the corret PS from Sam.

The tube I got from him (1675P) works *great*.

This 1674P, though -- with this supply, (exact same ratings and reqs as the 1675P) -- nothing but a dull violet glow from behind the mirror. No green.

Solid dull violet glow. Tube stays lit. (I've had it lit for about 5 minutes now with the new PS.) -- Not the faintest trace of green light. (Doing this in a darkened room.) Not even a microwatt.

Strange...
Well I think a return is your best bet. Start a dispute if they fail to answer.

Some options depending on what you want to do.
Listen for ticking/arcing maybe its shorted internally. If it fires letting it run (days) sometimes can help. If that falls or you feel adventurous then I would take the tube out and replace the ballast resistor. It also ensures you have no shorts on the heat tape?. (Not sure whats it is called but present in some.) That also lets you see what color the bore is. How to remove it is on Sam's sight and you will want to keep it intact or have a replacement. Longer tubes like to keep the heat consistent the length of the tube or you lose power. Other color HeNe's even more so as they are even more inefficient power in versus mW out..

I would "think" mirror misalignment of a HeNe in its tube is unlikely to change during shipping enough to stop lasing but that is a good candidate for your problem. Also aligning them is difficult and a very slow process. At least for me so if you decide to try that find out what your options are by taking a picture of each end of the tube and post. They have different setups and know which one will get yo better advice.

Remember the tube is high voltage and both power supply and tube will hold a charge after turned off as mentioned.

Sam is the man to ask but check his site first for more info.
http://repairfaq.ece.drexel.edu/sam/laserhen.htm

Best of luck on what ever course you choose.
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