| 摘要 |
Subject track lighting system comprises a more-or-less regular lighting track having at least two pairs of track conductors. Of these track conductors, an initial pair carries the regular 120 Volt/60 Hz power line voltage. Plugged into the track and connecting with the initial pair of track conductors is one or more voltage-conditioning adapters-with each such adapter receiving its input voltage from the initial pair of track conductors and providing its conditioned output voltage to one of the other pairs of track conductors. Thus, depending upon the particular functions provided by the adapters, the different pairs of track conductors may be used in independently different ways. For instance, with one adapter being a frequency converter with an output voltage of 12 Volt/30 kHz, the pair of track conductors to which its output is connected may be used directly with low-voltage Halogen lamps-while ordinary 120 Volt incandescent lamps may simultaneously be used with the initial pair of track conductors. Thus, in this particular case, the same multi-conductor track can directly and conveniently power both low-voltage and high-voltage lamps. Functions suitable to provide in the form of subject adapters include: voltage magnitude transformation, voltage frequency transformation, time-programmable switching, remote operation, power line isolation, dimming, current limitation, and various combinations of all of these.
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