LED BULB AND METHOD FOR OPERATING SAME
    2.
    发明申请

    公开(公告)号:US20180263086A1

    公开(公告)日:2018-09-13

    申请号:US15451651

    申请日:2017-03-07

    Abstract: Described is an LED replacement bulb having the same physical shape and appearance as a fluorescent bulb, but having the superior illumination characteristics of LED lights (e.g., the ability to dim, the absence of flicker) and the ability to switch (with or without transition) from a first color to a second color while the LED lighting assembly undergoes a dimming or brightening procedure. Furthermore, because the bulb uses the output of the light fixture (e.g., the output of the ballast of a fluorescent light fixture) as the cue for whether to change colors, no retrofitting of the lighting system is required (as might be the case if more modern, network-addressable light units were required).

    Method and apparatus for correcting for power harmonics

    公开(公告)号:US10128654B2

    公开(公告)日:2018-11-13

    申请号:US15682882

    申请日:2017-08-22

    Abstract: A light-emitting diode (“LED”) lighting unit includes an operational, a sense resistor electrically connected to the input of the operational amplifier, a first field effect transistor (“FET”) whose gate is electrically connected to the output such that the input voltage at the gate of the first FET rises and falls with the output voltage, a second FET whose gate is electrically connected to the output such that the input voltage at the gate of the second FET rises and falls with the output voltage, and a string of LED lights connected such that when the voltage across the string drops below a level to operate, the voltage across a sense resistor drops, causing the operational amplifier to increase its output until the input voltage at the gate of the second FET increases allowing one bank of LED lights to operate.

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