Re: Self Ballasted. « Reply #2 on: March 28, 2021, 07:48:27 PM » Author: Joe Maurath, Jr.
Quote from: Attfreakk on March 28, 2021, 02:53:01 PM What is the reason for self ballasted mercury lamps if they have the same efficiency and life of an incandescent? The published advantages of self-ballasted MV lamps was longer life (around 10,000 hours) or about 7-10 times longer than the typical incandescents they were designed to replace with somewhat improved efficacy. The biggest drawback with SBMV lamps has been that they always have been quite expensive.
		Logged

"A secret to happiness is letting every situation be what it is, instead of what you think it should be, and then making the best of it."

Please refer to www.insulators.info where I periodically post many images of lights and insulators in the group's Picture Poster Gallery. Thank you.

	Re: Self Ballasted. « Reply #4 on: March 29, 2021, 06:21:02 AM » Author: AngryHorse
They were also a brightness upgrade back in their day, if you had a workshop lit with 500 watt clear GLS @8200 lumens, you could direct fit 500 watt MBTF, and get 13,000 lumens for the same load
		Logged

Current: UK 230V, 50Hz
Power provider: e.on energy
Street lighting in our town: Philips UniStreet LED (gen 1)
Longest serving LED in service at home, (hour count): Energetic mini clear globe: 54,050 hrs @ 10/2/24

Welcome to OBLIVION

	Re: Self Ballasted. « Reply #5 on: March 29, 2021, 12:34:11 PM » Author: Rommie
One of the main reasons for using them was if the fixtures were in difficult to reach places where it would be costly and time consuming to re-lamp. Also they could directly replace incandescent bulbs.
		Logged

Ria (aka Rommie) in Aberdeen
Administrator, UK & European time zones. Any questions or problems, please feel free to get in touch

"What greater gift than the love of a cat..?" - Charles Dickens
*** No smiley-only replies, please ***