Sylvania MV bulbs « on: May 12, 2008, 11:22:34 PM » Author: icefoglights
About what year was it that Sylvania switched the shape of their 175 watt mercury vapor bulbs from BT-28 to ED-28?  Was that the same time they started importing bulbs from china?
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	Re: Sylvania MV bulbs « Reply #1 on: May 13, 2008, 06:40:23 PM » Author: Silverliner
Sylvania began going to the ED-28 lamp in 2000, sourcing it from GE and Philips. The chinese Sylvania mercury lamps began appearing in 2002-03. Quote from: icefoglights on May 12, 2008, 11:22:34 PM About what year was it that Sylvania switched the shape of their 175 watt mercury vapor bulbs from BT-28 to ED-28?  Was that the same time they started importing bulbs from china?
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	Re: Sylvania MV bulbs « Reply #2 on: May 13, 2008, 11:06:46 PM » Author: icefoglights
Did they just get the ED-28 shape from GE/Philips or where Sylvania branded bulbs from 2000-2002 really made by Philips or GE?
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	Re: Sylvania MV bulbs « Reply #4 on: May 15, 2008, 04:51:48 AM » Author: Silverliner
Yes that's right. Sourced in means the product was bought from outside suppliers. In this case Sylvania bought the initial ED-28 mercury lamps from GE and Philips, with the Sylvania name marked on said lamps. The Chinese Sylvania mercury lamps are made by Sylvania's current parent company, Osram. Sylvania still makes certain mercury lamps in the USA such as reflector types and 1000w BT-56s. Quote from: Mr. Big on May 14, 2008, 01:05:03 AM if they say sourced, it usually means made by...
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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.

	Re: Sylvania MV bulbs « Reply #5 on: May 15, 2008, 11:48:34 AM » Author: TudorWhiz
Also according to a friend who works at Sylvania, the arctube of MV may be made in USA.....while the rest in Chinese...I could be wrong though
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	Re: Sylvania MV bulbs « Reply #6 on: May 16, 2008, 09:59:45 PM » Author: icefoglights
Well at least some part of an MV lamp may still be made in the US
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