Silverliner
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Rare white reflector
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| Yup both T8 and T12 were invented in 1938. Only the modern electronic T8s have been around since the 1980s.
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joseph_125
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Wait, what about the T17 tubes? When they're made?
According to James here's the T17 was launched in 1940. I believe originally there were two lengths. The five foot F100T17 and the very rare three foot F65T17. As for T5 lamps, I believe the original preheat range (4,6,8, and 13w lamps) came out around the same time, during the early 1940s. Modern T5 lamps (HE and HO) I believe were introduced something in the 90s, maybe 1995. I'm not sure when did T10 come out. I think they were originally a alternative energy saving or high lumen drop in for T12 lamps. |
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« Last Edit: November 14, 2020, 05:17:20 PM by joseph_125 »
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Binarix128
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220V AC 50Hz, NTSC
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| Interesting that T5 tubes didn't become popular until a few years ago.
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joseph_125
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| As far as I know, the modern T5 tubes are pretty much designed to be run off a electronic ballast too. T8 was the oddball as they were originally run on magnetic rapid start ballasts just like T12 lamps but later were pretty much all electronic.
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xmaslightguy
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I'm not sure when did T10 come out. I think they were originally a alternative energy saving or high lumen drop in for T12 lamps. I believe the were also much more common in Japan (may have even started out there.) |
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ThunderStorms/Lightning/Tornados are meant to be hunted down & watched...not hidden from in the basement!
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Silverliner
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I believe the were also much more common in Japan (may have even started out there.)
Westinghouse made T10s starting in the 1970s. |
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Administrator of Lighting-Gallery.net. Need help? PM me.
Member of L-G since 2005.
Collector of vintage bulbs, street lights and fluorescent fixtures.
Electrician.
Also a fan of cars, travelling, working out, food, hanging out.
Power company: Southern California Edison.
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Binarix128
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I believe the were also much more common in Japan (may have even started out there.)
T10's were also common here seems like, because when I see old fixtures the tubes are thinner than T12 but thicker than T8. Also, some T10's were made in Chile. |
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joseph_125
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| Yeah the only T10 lamps I have were either Japanese imports or Durotest lamps. Durotest even made a powertwist T10 that I believe could run on either T8 or T12 ballasts.
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Ash
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| All T10's i seen (Chinese) are identical to T12s electrically and in light output/phosphor type. So no energy saving, maybe it was for saving on materials
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lightinglover8902
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| TBH, were T10 tubes used in commercial sign lighting? I think I saw a few at the ReStore which were made in Japan for use in sign lighting.
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Save the Cooper OVWs!! Don't them down by crap LED fixtures!!!
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Fluorescent05
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Zack
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TBH, were T10 tubes used in commercial sign lighting? I think I saw a few at the ReStore which were made in Japan for use in sign lighting.
T10 HO lamps were used on magnetic rapid start ballasts for signs. |
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