EngRN: Semiconductors (Topic)最新文献

筛选
英文 中文
Light Sensor to Switch On a Light or Any Device 用于打开灯或任何设备的光传感器
EngRN: Semiconductors (Topic) Pub Date : 2019-01-18 DOI: 10.2139/ssrn.3318154
Saif Aldeen Saad Alkadhim, Sarah Kadhim Aboud
{"title":"Light Sensor to Switch On a Light or Any Device","authors":"Saif Aldeen Saad Alkadhim, Sarah Kadhim Aboud","doi":"10.2139/ssrn.3318154","DOIUrl":"https://doi.org/10.2139/ssrn.3318154","url":null,"abstract":"The Light Dependent Resistor (LDR) is made from a Cadmium-Sulfide compound (CdS). CdS is a semiconductor material. The resistance of the LDR changes as the light level changes. More light produces more electron — hole pairs in the material, making the material a better conductor in light. Resistance decreases (conductivity increases) as light levels increase because there are more charge carriers in the material. Note that R = 1/G (G is conductance).<br><br>The LDR controls the voltage on the transistor’s base. As it gets darker in the room, the voltage on the base will increase until the transistor is forward biased. This results in high current flowing from the transistor’s collector to the base. This collector current flows to the LED and is responsible for turning the LED on.","PeriodicalId":185724,"journal":{"name":"EngRN: Semiconductors (Topic)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132944298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Towards Temperature Insensitive Nanoscale CMOS Circuits with Adaptively Regulated Voltage Power Supplies 具有自适应稳压电源的温度不敏感纳米级CMOS电路
EngRN: Semiconductors (Topic) Pub Date : 2017-06-30 DOI: 10.2139/ssrn.3389126
Mingyu Zhu, Yingtao Jiang, Mei Yang, Xiaohang Wang
{"title":"Towards Temperature Insensitive Nanoscale CMOS Circuits with Adaptively Regulated Voltage Power Supplies","authors":"Mingyu Zhu, Yingtao Jiang, Mei Yang, Xiaohang Wang","doi":"10.2139/ssrn.3389126","DOIUrl":"https://doi.org/10.2139/ssrn.3389126","url":null,"abstract":"In this paper, we show that the temperature-induced performance drop seen in nanoscale CMOS circuitscan be tackled by powering the circuits with adaptively regulated voltage power supplies. Essentially, when temperature rises, the supply voltage will be bumped up to offset otherwise performance degradation. To avoid thermal over-drift as chip temperature exceeds its operation range, a voltage limiteris integrated into the proposed power supply to cap the supply voltage. Using this proposed adaptive voltage source to power individual CMOS logic gates and/or subsystems will free the chips from using expensive high-precision temperature sensors for thermal management and performance tuning. Experiments on various benchmark circuits, which are implemented with a 45nm CMOS technology, have confirmed that the circuit delay variation can be reduced to 15%~30% over a wide temperature range (0℃ to 90℃), a sharp contrast to the large delay variations (50%~75%)observed in most IC designs where a constant power supply is employed.","PeriodicalId":185724,"journal":{"name":"EngRN: Semiconductors (Topic)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128521905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信