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Thorn Gamma 6 18w SOX: Three years on. The 18w Osram SOX lamp has now completed 3 years of dusk-dawn service on my patio. All of the blackening aound the electrodes which was on the lamp from new has completey dissapeard and has now started to turn brown. I checked on this lamp several months ago and it had started turning white first. There is also the very slightest hint of some orange staining around the bend at the bottom of the lamp. There is no evidence of any sodium loss into the outer jacket at all. The lamp is operated on a Parmar resonant start style ballast with no in-circuit ignitor. Interesting to see the shadows of the electrodes from the bright sunlight.

Thorn Gamma 6 18w SOX: Three years on.

The 18w Osram SOX lamp has now completed 3 years of dusk-dawn service on my patio.
All of the blackening aound the electrodes which was on the lamp from new has completey dissapeard and has now started to turn brown. I checked on this lamp several months ago and it had started turning white first.
There is also the very slightest hint of some orange staining around the bend at the bottom of the lamp.
There is no evidence of any sodium loss into the outer jacket at all.

The lamp is operated on a Parmar resonant start style ballast with no in-circuit ignitor.
Interesting to see the shadows of the electrodes from the bright sunlight.

387A7195.JPG WRTL_Libra_55wPLL_1.jpg IMG_7999.JPG DPP00003049.JPG DPP00003043.JPG
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Filename:IMG_7999.JPG
Album name:FrontSideBus / Lanterns & Fittings
Filesize:1876 KiB
Date added:30 Jan, 2019
Dimensions:1280 x 1920 pixels
Displayed:56 times
URL:http://80.229.24.59:9232/gallery/displayimage.php?pid=10188
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Comment 1 to 13 of 13
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Danny   [30 Jan, 2019 at 02:12 PM]
That is doing ok. I hope my 18w Osram in my bulkhead lasts this long. Its been in for just over a year so far. I can get a photo if needed
lasagafield   [30 Jan, 2019 at 02:26 PM]
There's no way that's been in service for 3 years!
FrontSideBus   [30 Jan, 2019 at 04:32 PM]
Done dusk till dawn since 30th of Jan 2016 Smile
AngryHorse   [30 Jan, 2019 at 07:28 PM]
You have a better batch than What I had! Very Happy
FrontSideBus   [31 Jan, 2019 at 04:20 PM]
Date code is N418. Control gear might be gentler on it also as the OCV is only 330v.
AngryHorse   [25 Aug, 2019 at 11:02 PM]
Is this one still in Mark?, N718 was my dodgy batch Confused
FrontSideBus   [16 Sep, 2019 at 08:23 PM]
Still kicking.
FrontSideBus   [17 Oct, 2019 at 08:08 PM]
I might have to check this out tomorrow. Got back after a week in spain and it appears to have a slight intermittent flicker that comes and goes at random...
*Edit* Actually that was about 20-25 mins after switch-on when I noticed. Seems to have settled down now. Clocking up some hours now though.
Danny   [17 Oct, 2019 at 09:07 PM]
Yeah give us an update! This is something I’m very interested to see
Kev   [17 Oct, 2019 at 10:09 PM]
That’s a shame, hope it’s got a couple more years in it.
FrontSideBus   [19 Oct, 2019 at 08:21 PM]
Seems fine now?
Danny   [19 Oct, 2019 at 08:32 PM]
How does it look does it look any different or did you not open it up
FrontSideBus   [19 Oct, 2019 at 11:34 PM]
Ive not had a chance to look. Been pissing down.

Comment 1 to 13 of 13
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