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Re: More T8 Stuff

To: Aquatic-Plants at actwin_com
Subject: Re: More T8 Stuff
From: busko at stsci_edu (Ivo Busko)
Date: Mon, 7 Aug 2000 09:37:09 -0400 (EDT)

With all this talk about T-8 ballasts, let me just add a warning:
there are out there electronic ballasts that can drive 1, 2, 3 and 4
lamps. The 4 lamp models have always ballast factors < 1. Three lamp
models can be found with ballast factors as high as 1.2. So it is 
possible to have a 3 lamp configuration that produces as much ligth as
a 4 lamp one, by just replacing the ballast. If one is designing a
lamp fixture from scratch, it just doesn't make sense to use the 4 lamp
models. 

- Ivo Busko
  Baltimore, MD

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