scholarly journals High-bandwidth buffer amplifier for liquid crystal display applications

2017 ◽  
Vol 30 (4) ◽  
pp. 549-556
Author(s):  
Saeed Sadoni ◽  
Abdalhossein Rezai
Keyword(s):  
Liquid Crystal ◽  
Power Consumption ◽  
Performance Feedback ◽  
Power Supply ◽  
High Performance ◽  
Liquid Crystal Display ◽  
Feedback Circuit ◽  
High Bandwidth ◽  
Buffer Amplifier ◽  
Simulation Results

In this paper, a novel high-bandwidth and low-power buffer amplifier is presented for the liquid crystal display applications. This buffer amplifier consists of a folded cascade differential amplifier in the input and a class-amplifier in the output, which are designed carefully. The proposed buffer amplifier utilizes a high-performance feedback circuit to increase the bandwidth. It also utilizes a comparator circuit to avoid wasting power. The designed circuit has been simulated in 180nm technology using HSPICE 2008.3. The simulation results show that the bandwidth, power consumption and power supply of the designed circuit are 1.14MHz, 1.64mW and 1.8V, respectively.

Rack Server Solution in Data Center

2015 ◽  
Author(s):  
Sheng Kang ◽  
Guofeng Chen ◽  
Chun Wang ◽  
Ruiquan Ding ◽  
Jiajun Zhang ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Power Supply ◽  
Data Center ◽  
Power Efficiency ◽  
High Performance ◽  
High Efficiency ◽  
High Growth ◽  
General Purpose ◽  
Power Supplies

With the advent of big data and cloud computing solutions, enterprise demand for servers is increasing. There is especially high growth for Intel based x86 server platforms. Today’s datacenters are in constant pursuit of high performance/high availability computing solutions coupled with low power consumption and low heat generation and the ability to manage all of this through advanced telemetry data gathering. This paper showcases one such solution of an updated rack and server architecture that promises such improvements. The ability to manage server and data center power consumption and cooling more completely is critical in effectively managing datacenter costs and reducing the PUE in the data center. Traditional Intel based 1U and 2U form factor servers have existed in the data center for decades. These general purpose x86 server designs by the major OEM’s are, for all practical purposes, very similar in their power consumption and thermal output. Power supplies and thermal designs for server in the past have not been optimized for high efficiency. In addition, IT managers need to know more information about servers in order to optimize data center cooling and power use, an improved server/rack design needs to be built to take advantage of more efficient power supplies or PDU’s and more efficient means of cooling server compute resources than from traditional internal server fans. This is the constant pursuit of corporations looking at new ways to improving efficiency and gaining a competitive advantage. A new way to optimize power consumption and improve cooling is a complete redesign of the traditional server rack. Extracting internal server power supplies and server fans and centralizing these within the rack aims to achieve this goal. This type of design achieves an entirely new low power target by utilizing centralized, high efficiency PDU’s that power all servers within the rack. Cooling is improved by also utilizing large efficient rack based fans for airflow to all servers. Also, opening up the server design is to allow greater airflow across server components for improved cooling. This centralized power supply breaks through the traditional server power limits. Rack based PDU’s can adjust the power efficiency to a more optimum point. Combine this with the use of online + offline modes within one single power supply. Cold backup makes data center power to achieve optimal power efficiency. In addition, unifying the mechanical structure and thermal definitions within the rack solution for server cooling and PSU information allows IT to collect all server power and thermal information centrally for improved ease in analyzing and processing.

scholarly journals High performance transflective liquid crystal display associated with fringe-field switching device

2011 ◽  
Vol 19 (9) ◽  
pp. 8085 ◽  
Author(s):  
Young Jin Lim ◽  
Suck Jae Shin ◽  
Nam Ho Cho ◽  
Surjya Sarathi Bhattacharyya ◽  
Kyoung Ho Park ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
High Performance ◽  
Liquid Crystal Display ◽  
Fringe Field ◽  
Switching Device

27-3: High Performance Fringe Field Switching Mode Liquid Crystal Display with Photo-alignment Technology for Vehicular Application

2018 ◽  
Vol 49 (1) ◽  
pp. 351-354 ◽  
Author(s):  
Masanobu Mizusaki ◽  
Hiroshi Tsuchiya ◽  
Kiyoshi Minoura ◽  
Katsuya Ogawa ◽  
Koshiro Taniike ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
High Performance ◽  
Liquid Crystal Display ◽  
Fringe Field ◽  
Photo Alignment ◽  
Switching Mode

A CLOCK GATED SUCCESSIVE APPROXIMATION REGISTER FOR A/D CONVERSIONS

2014 ◽  
Vol 23 (02) ◽  
pp. 1450023
Author(s):  
MOHAMED O. SHAKER ◽  
MAGDY A. BAYOUMI
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Successive Approximation ◽  
Power Supply ◽  
Cmos Technology ◽  
Clock Signal ◽  
Switching Activity ◽  
Successive Approximation Register ◽  
Simulation Results ◽  
Data Switching

A novel low power clock gated successive approximation register (SAR) is proposed. The new register is based on gating the clock signal when there is no data switching activity. It operates with fewer transistors and no redundant transitions which makes it suitable for low power applications. The proposed register consisting of 8 bits has been designed up to the layout level with 1 V power supply in 90 nm CMOS technology and has been simulated using SPECTRE. Simulation results have shown that the proposed register saves up to 75% of power consumption.

Energy-Efficient Optical Interconnects in Cloud Computing Infrastructures

2013 ◽  
pp. 463-478
Author(s):  
Christoforos Kachris ◽  
Ioannis Tomkos
Keyword(s):  
Cloud Computing ◽  
Power Consumption ◽  
Interconnection Networks ◽  
Optical Interconnects ◽  
High Performance ◽  
Interconnection Network ◽  
Research Literature ◽  
Optical Interconnection ◽  
High Bandwidth ◽  
Cloud Infrastructures

This chapter discusses the rise of optical interconnection networks in cloud computing infrastructures as a novel alternative to current networks based on commodity switches. Optical interconnects can significantly reduce the power consumption and meet the future network traffic requirements. Additionally, this chapter presents some of the most recent and promising optical interconnects architectures for high performance data centers that have appeared recently in the research literature. Furthermore, it presents a qualitative categorization of these schemes based on their main features such as performance, connectivity, and scalability, and discusses how these architectures could provide green cloud infrastructures with reduced power consumption. Finally, the chapter presents a case study of an optical interconnection network that is based on high-bandwidth optical OFDM links and shows the reduction of the energy consumption that it can achieve in a typical data center.

scholarly journals Design of very low-voltages and high-performance CMOS gate-driven operational amplifier

2020 ◽  
Vol 20 (2) ◽  
pp. 670
Author(s):  
Hayder Khaleel AL-Qaysi ◽  
Musaab Mohammed Jasim ◽  
Siraj Manhal Hameed
Keyword(s):  
Power Supply ◽  
Operational Amplifier ◽  
High Performance ◽  
Power Supplies ◽  
Slew Rate ◽  
Op Amp ◽  
Rejection Ratio ◽  
Power Supply Rejection Ratio ◽  
Performance Specifications ◽  
Simulation Results

This paper presents the description and analysis of the design and HSPICE-based simulation results of very low-voltages (LVs) power supplies and high-performance specifications CMOS gate-driven (GD) operational amplifier (Op-Amp) circuit. The very LVs CMOS GD Op-Amp circuit designed using 90nm CMOS technology parameters and the folded cascode (FC) technique employed in the differential input stage. The HSPICE simulation results demonstrate that the overall gain is 73.1dB, the unity gain bandwidth is 14.9MHz, the phase margin is , the total power dissipation is 0.91mW, the output voltage swing is from 0.95V to 1V, the common-mode rejection ratio is dB, the equivalent input-referred noise voltage is 50.94  at 1MHz, the positive slew rate is 11.37 , the negative slew rate is 11.39 , the settling time is 137 , the positive power-supply rejection ratio is 74.2dB, and the negative power-supply rejection ratio is 80.1dB. The comparisons of simulation results at 1V and 0.814V power supplies’ voltages of the very LVs CMOS GD Op-Amp circuit demonstrate that the circuit functions with perfect performance specifications, and it is suitable for many considerable applications intended for very LVs CMOS Op-Amp circuits.

scholarly journals Homestay save rent method through consumer self-management of electricity power consumption

2020 ◽  
Vol 11 (1) ◽  
pp. 425
Author(s):  
Dirman Hanafi ◽  
Kamal Khairi Kamaruddin ◽  
Hisyam Abdul Rahman ◽  
Yudhi Gunardi
Keyword(s):  
Liquid Crystal ◽  
Power Consumption ◽  
Experimental Test ◽  
Rapid Growth ◽  
Liquid Crystal Display ◽  
Self Management ◽  
Electricity Cost ◽  
Electricity Power ◽  
Main Components ◽  
The Way

<span>The rapid growth in the number of homestays and hotels, competition has increased among them. Homestay that is a relatively newcomer in this business should find the way to become competitive. One way is to make rental fees more affordable. In this paper a method to reduce the homestay rental fees are proposed. </span><span lang="MS">This is done by separating the component of the electricity cost from the whole rental fees. Then it requires the </span><span>consumer</span><span lang="MS"> to pay their own electricity used and also gives opportunity to them to manage their own electricity used how much they need.</span><span> This mechanism is implemented by equipping the homestay with the coin kilowatt hour (ckWh) meter. The consumer can plan how much they will use the power since they stay by inserting the certain amount of coin into the ckWh meter. After insert the coin the electricity sources will on and ready to use. The main components of this ckWh meter consist of the Arduino Uno microcontroller as a brain of the device, the coin acceptor where the coin will insert, and kilowatt hour meter. Besides that, it also equipped with liquid-crystal display (LCD) to show the amount of money currently available. The experimental test shows that the device develop work well and can control the used of the electricity related to the amount money that has been inserted.</span>

Development of Low-Power-Consumption System on Glass Liquid Crystal Display

2007 ◽  
Vol 46 (3B) ◽  
pp. 1370-1374 ◽  
Author(s):  
Keun Woo Park ◽  
Kyung Hoon Kim ◽  
Ho Suk Maeng ◽  
Sang Hoon Lee ◽  
Chul Ho Kim ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Power Consumption ◽  
Low Power ◽  
Liquid Crystal Display ◽  
Low Power Consumption ◽  
Consumption System
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