Results 21 to 30 of about 9,592 (298)
A novel index modulation for dimming in LiFi systems [PDF]
, 2020 This paper introduces a novel dimming method for Light Fidelity (LiFi) based on index modulation (IM). A time-domain sample-index modulation (TIM) is proposed for indexed dimming (iDim). The aim is to maintain a high communication performance measured in
Islim, Mohamed Sufyan +2 more
core +3 more sources
A High Accuracy Weak Voltage LED Analog Dimming Method
IEEE Access, 2019 A weak voltage analog dimming method for high precision light emitting diode (LED) current control with N-Bits analog static offset calibration (N-Bits ASOC), dynamic offset cancellation (DOC) and K-times dimming duty to voltage (KD2V) conversion is ...
Jiang-Ping He +5 more
doaj +1 more source
Artificial Intelligent Technique for Power Management Lighting Based on FPGA [PDF]
Engineering and Technology Journal, 2020 The modern technological advances gave rise to new intelligent ways of performance and management in various fields of our lives. The employment of the artificial intelligent techniques proved influential in enhancing the technological developments and ...
Hanan A. R. Akkar, Sameh J. Mohammed
doaj +1 more source
An Off-Line Single-Inductor Multiple-Outputs LED Driver with High Dimming Precision and Full Dimming Range [PDF]
, 2016 This paper presents a single-inductor multipleoutputs (SIMO) LED driver with precise dimming and full dimming range. Based on the coordination of a string-level and a system-level dimming schemes, the proposed SIMO LED driver can overcome practical ...
Tan, SC +4 more
core +1 more source
Observing axions through photon ring dimming of black holes [PDF]
, 2023 It is known that magnetic fields exist near black holes and photons can go around black holes due to strong gravity. Utilizing these facts, we can probe hypothetical pseudoscalar particles, so-called axions.
Soda, Jiro +2 more
core +1 more source
Frontiers in Environmental Science, 2022 Global solar radiation (GSR) reaching the Earth’s surface can directly alter the energy balance of the climate system. The potential influence of inhomogeneity issues on Chinese GSR records on dimming and brightening in China has been argued for years ...
Jingxin Li +5 more
doaj +1 more source
Quantification of the urbanization impacts on solar dimming and brightening over China
Environmental Research Letters, 2022 Metropolis’ contribution (anthropogenic aerosols) to solar dimming and brightening remains a hot topic of special concern over the past several decades.
Shuyue Yang +6 more
doaj +1 more source
A Novel Discrete Dimming Ballast for Linear Fluorescent Lamps [PDF]
, 2009 A novel discrete dimming ballast for linear fluorescent lamps is proposed in this paper. A proposed dimming control circuit is combined with a ballast module for multiple lamps to realize control of three discrete lighting levels.
Stankovic, Ana Vladan +3 more
core +1 more source
Increasing luminous efficiency of led by joint dimming mode with adjustable peak current
MATEC Web of Conferences, 2016 Luminous efficiency and color temperature of LED chip are affected by current and temperature. PWM dimming mode only works at two kinds of current levels-rated current and zero current.
Li Yongtao +5 more
doaj +1 more source
Dimming Control Scheme With High Power and Spectrum Efficiency for Visible Light Communications
IEEE Photonics Journal, 2017 In this paper, in order to accommodate dimming demands for illumination, which is an essential requirement for visible light communication (VLC), a dimming control scheme with high power and spectrum efficiency is proposed.
Fang Yang, Junnan Gao
doaj +1 more source