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From: robk@altos86.Altos.COM (Rob Kleinschmidt)
Newsgroups: sci.electronics,misc.consumers.house
Subject: Re: more on lighting
Message-ID: <4489@altos86.Altos.COM>
Date: 12 Dec 90 23:47:26 GMT
References: <1990Dec10.070330.1533@amd.com>
Reply-To: robk@altos86.UUCP (Rob Kleinschmidt)
Followup-To: sci.electronics
Organization: Altos Computer Systems, San Jose, CA
Lines: 32

In article <1990Dec10.070330.1533@amd.com> phil@brahms.amd.com (Phil Ngai) writes:
>I am enclosing some data I have taken on various types of lights
>with regard to wattage, lumens, and life.

	(Interesting set of data follows)

I recently discovered the Syvania "Capsylite" line of quartz/halogen bulbs.
These are interesting products because they are interchangeable with standard
incandescants, but are appreciably more efficient, longer lived, and
(I believe) have better color. Because they use a double shell of glass,
they are also insensitive to finger oils, and do not present the same risk of
burns when at operating temperature. As a drop in replacement for incandescant,
these bulbs are very nice indeed:

          Type       W   Lumens  Color   L/W    Maker    Model      Life

        QH          42     665          15.8    Sylvania CAP         3500
>       I           40     505          12.6                         1000

        QH          52     885          17.0    Sylvania CAP         3500
>       I           60     870          14.5                         1000

        QH          72    1300          18.0    Sylvania CAP         3500
>       I           75    1190          15.9                          750

The bulbs are available in 120 and 130 V. versions, plus some set of
floods and spots (52 and 72 Watts I think). The ones I purchased cost
almost $4.00 each, so they are not cheap, but I have been very happy
with them so far. No data at the moment on the 3500 hour lifetimes.


Rob Kleinschmidt