Detection of malfunctioning bulbs in decorative light strings
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United States of America Patent
Stats
-
Oct 2, 2007
Grant Date -
May 11, 2006
app pub date -
Dec 22, 2005
filing date -
Mar 20, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system for locating a malfunctioning bulb in a decorative light string uses an antenna that produces an output signal corresponding to the strength of the electric field produced by a portion of the light string near the antenna. An amplifier is coupled to the antenna to receive the antenna output signal and produce an amplified output signal representing the strength of the electric field. The amplifier includes a negative feedback circuit to improve the stability of the amplifier. A detector receives the amplifier output signal and activates an alarm device when the amplifier output signal is above or below a predetermined threshold representing a known operational condition of the light string.
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Family
International Classification(s)
Cited Art Landscape
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