Appeal No. 96-0319 Page 2
Application No. 08/155,519
The invention is directed to a lighting system for a
suspended grid ceiling and, more particularly, to a lighting
system which employs a power conditioner which transforms an AC
input line voltage to a DC voltage and employs circuitry which
prevents any power drawn from the DC output terminals from
exceeding the maximum amount usually considered safe from fire
initiation hazard.
Representative independent claim 1 is reproduced as
follows:
1. An arrangement comprising:
a pair of power line conductors across which exists an AC
power line voltage of frequency lower than 100 Hz; the amount
of power available from the power line conductors being
distinctly higher than the maximum amount usually considered
safe from fire-initiation hazard;
a power conditioner having (i) a pair of power input
terminals connected with the power line conductors, and (ii) a
pair of DC output terminals across which is conditionally
provided a DC supply voltage; the power conditioner including
sensing and control circuitry operative to prevent any power
drawn from the DC output terminals from exceeding the maximum
amount usually considered safe from fire initiation hazard;
an electronic ballast having (i) a pair of DC input
terminals disconnectably connected with the DC output terminals
by way of a flexible connect cord, and (ii) a pair of AC output
terminals at which is conditionally provided an AC ballast
voltage of frequency higher than 10 kHz; and
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Last modified: November 3, 2007