A runtime support mechanism for fast mode switching of a self-morphing core for power efficiency

2014 ◽  
Author(s):  
Sudarshan Srinivasan ◽  
Nithesh kurella ◽  
Israel Koren ◽  
Rance Rodrigues ◽  
Sandip Kundu
Keyword(s):  
Power Efficiency ◽  
Mode Switching ◽  
Fast Mode ◽  
Runtime Support ◽  
Support Mechanism

scholarly journals Near-Field Wireless Power and Data Transmission Through two-wire Power Carrier

2020 ◽  
Vol 9 (9) ◽  
pp. 463-467
Keyword(s):  
Magnetic Induction ◽  
Power Efficiency ◽  
Information Transfer ◽  
Near Field ◽  
Mode Switching ◽  
Receiver Design ◽  
Power Transfer ◽  
Wireless Power ◽  
Induction Principle ◽  
Power Transfer Efficiency

These days wireless power transfer is the widely used technology to transmit power and information simultaneously. In this paper, the magnetic induction principle is used to transfer power and information simultaneously through a single winding arrangement. It is shown that a 7W LED lamp can be illuminated between a distance of about 5mm. Magnetic induction principle can be applied to a short-range power and information transfer only. This paper discusses the underwater LED light luminaire transmitter and receiver design components, along with it shows the mode switching of LED. The power transfer efficiency is about 65% when the transmitter and receiver are placed in-line and power efficiency decreases with the displacement of the lamp to either side.

Fast Mode-Switching (60ns) by Using A 2 × 2 Silicon Optical Mode Switch

2017 ◽  
Vol E100.C (10) ◽  
pp. 782-788 ◽  
Author(s):  
Haisong JIANG ◽  
Ryan IMANSYAH ◽  
Luke HIMBELE ◽  
Shota OE ◽  
Kiichi HAMAMOTO
Keyword(s):  
Mode Switching ◽  
Fast Mode ◽  
Optical Mode ◽  
Mode Switch

Fast mode-switching technique in hrbrid-mode operation

2008 ◽  
Author(s):  
Chi-Lin Chen ◽  
Wei-Lun Hsieh ◽  
Han-Hsiang Huang ◽  
Ke-Horng Chen
Keyword(s):  
Mode Switching ◽  
Fast Mode ◽  
Mode Operation

scholarly journals A Two-Channel High-Performance DC-DC Converter for Mobile AMOLED Display Based on the PWM–SPWM Dual-Mode Switching Method

Electronics ◽  
2021 ◽  
Vol 10 (17) ◽  
pp. 2059
Author(s):  
Hak-Yun Kim ◽  
Tae-Un Kim ◽  
Ho-Yong Choi
Keyword(s):  
Pulse Width ◽  
Power Efficiency ◽  
High Performance ◽  
Pulse Width Modulation ◽  
Dead Time ◽  
Input Voltage ◽  
Mode Switching ◽  
Light Load ◽  
Switching Node ◽  
Switching Method

In this paper, we propose a design of a two-channel high-performance DC-DC converter that provides a positive voltage VPOS with a low ripple, and a negative voltage VNEG with high power efficiency, for the purpose of enhancing power efficiency and output ripple under light loads of 100 mA or less for mobile active-matrix organic light-emitting diode (AMOLED) displays. The VPOS was designed as a boost converter using a novel input voltage variation reduction circuit (IVVRC), which rapidly changes the pulse width for input voltage fluctuations, using a feed-forward path. The VNEG was designed as an inverting buck–boost converter based on the pulse width modulation–set time variable pulse width modulation (PWM–SPWM) dual-mode switching method to enhance power efficiency, especially under light loads, and to reduce the overhead of the circuit configuration using a voltage-controlled oscillator. In addition, an adaptive dead-time using voltage detection of switching node (ADTVS) circuit was proposed to enhance power efficiency, which detects the voltage of the switching node at every cycle, and keeps the dead-time constant irrespective of changes in driving conditions. The proposed converter was fabricated with a chip size of 1.67 mm × 2.44 mm, using a 0.35 μm BCD process. Measurement results showed that the power efficiency of our converter was 72.9%~90.4% at 5 mA–100 mA light load output current, which is 2.7%~5.8% higher than the output of the previous converter. Furthermore, the output voltage ripple of VPOS and VNEG at 5 mA light load output current was 3.0 mV and 5.3 mV, respectively, which improved by 19% and 25% as compared to those of the previous converter, respectively.

Effect of Shielding a Floating Electrode on the Power Efficiency of a Micro-plasma VUV Light Source

2015 ◽  
Vol 135 (3) ◽  
pp. 114-115 ◽  
Author(s):  
Ryoto Sato ◽  
Daisuke Yasumatsu ◽  
Shinya Kumagai ◽  
Masaru Hori ◽  
Minoru Sasaki
Keyword(s):  
Light Source ◽  
Power Efficiency ◽  
Floating Electrode

EXPERIMENTAL AND ANALYTICAL STUDIES OF VERTICAL AXIS WIND TURBINES

2018 ◽  
pp. 51-58
Author(s):  
B. P. Khozyainov
Keyword(s):  
Wind Turbine ◽  
Flow Velocity ◽  
Wind Power ◽  
Wind Turbines ◽  
Power Efficiency ◽  
Air Flow ◽  
Geometrical Parameters ◽  
Wind Speeds ◽  
Analytical Studies ◽  
Air Flow Velocity

The article carries out the experimental and analytical studies of three-blade wind power installation and gives the technique for measurements of angular rate of wind turbine rotation depending on the wind speeds, the rotating moment and its power. We have made the comparison of the calculation results according to the formulas offered with the indicators of the wind turbine tests executed in natural conditions. The tests were carried out at wind speeds from 0.709 m/s to 6.427 m/s. The wind power efficiency (WPE) for ideal traditional installation is known to be 0.45. According to the analytical calculations, wind power efficiency of the wind turbine with 3-bladed and 6 wind guide screens at wind speedsfrom 0.709 to 6.427 is equal to 0.317, and in the range of speed from 0.709 to 4.5 m/s – 0.351, but the experimental coefficient is much higher. The analysis of WPE variations shows that the work with the wind guide screens at insignificant average air flow velocity during the set period of time appears to be more effective, than the work without them. If the air flow velocity increases, the wind power efficiency gradually decreases. Such a good fit between experimental data and analytical calculations is confirmed by comparison of F-test design criterion with its tabular values. In the design of wind turbines, it allows determining the wind turbine power, setting the geometrical parameters and mass of all details for their efficient performance.

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