会合性ニ成分溶液の過剰熱力学的性質の研究 : エステル+極性液体、ベンゼン

博士(理学)大阪市立大

Design of a main/sub dual-channel LED driver

针对传统的矿灯存在的体积大、寿命短、耗电量大、玻璃易碎、使用不安全等不足,设计了一款以锂电池为电源、LED为光源、高精度欠压阈值和主辅双通道自动切换的恒流驱动芯片,减小了矿灯的体积和重量,提高了矿灯的寿命和安全使用性能。为了既保证主灯的生产工作时间,又保证辅灯的应急时间,提出一种高精度欠压阈值检测电池电压,实现双通道自动切换的结构,精确检测电池的容量变化,保证了充电的时间节点,确保了矿灯使用安全;为解决电池电压充电节点的一致性,设计了时序逻辑校正控制结构电路,精确调整了分压电阻的阻值,实现了带有80 m V迟滞的欠压阈值±2%电压范围的控制,有效防止了因电源波动引起双通道切换的误操作,满足芯片稳定性好、抗干扰性强的设计要求。另外还设计了主灯短路保护和过温保护等电路,进一步保证矿灯工作安全。Safety is the most important factor in miner production,and there are a lot of accidents are caused by miner's lamp. Traditional miner's lamps use lead-acid batteries for power,incandescent tungsten as light source which has a number of disadvantages such as large volume,high maintenance costs,short lifetime,great power consumption and unsafely because of the fragile glass. This paper designed a lithium battery as the power supply,the LED as light source of high precision under voltage threshold and automatic switching dual channel driver with constant current,overcome the above disadvantages.This paper presents a structure that the dual channel can switch automatically by detecting the battery voltage with high precision under voltage threshold to ensure working time of the main light production and emergency time of auxiliary lights. Accurate detection of changes in battery capacity guarantees that the right charging time and improves the safety of the lamp. To charge battery consistently,it designs a sequential logic circuit,making under voltage threshold voltage in the range of ± 2% with 80 m V hysteresis for high precision requirement. In order to reduce the power dissipation,it designs a 8000-fold high-gain current amplifier to drive linear MOS with 0. 1 V dropout for 200 m A. The chip provides the main LED shorts protection and over temperature protection against unexpected situations

Project Proposal - Gravity\u27s Rainbow

This proposal consist of one introduction of the project and the artist Hu Jianping (the first page of the file) which was published in book Chinese Contemporary Artist\u27s Agenda in 1994, and a design graphic of the work (the second page of the file). (Jerry Wu\u2723).https://digital.kenyon.edu/zhoudocs/1114/thumbnail.jp

Invitation of the APE\u2794 Art Show

This invitation is scripted in both Chinese and English. The first page of the file displays the cover page of the invitation; the second page of the file shows the back side of the invitation card with logistical information and introduction of the art show. (Jerry Wu\u2723).https://digital.kenyon.edu/zhoudocs/1112/thumbnail.jp

Essay: From Street to Villa - Fresh Looks in Shanghai Urban Arts

This essay is scripted in Chinese. The part of the essay concern HU JianPing is marked out by a square made by marker. (Jerry Wu\u2723).https://digital.kenyon.edu/zhoudocs/1123/thumbnail.jp

Artist Note: Some Notes about my (HU JianPing) Works in Exhibitions

The notes are scripted in Chinese (both simplified and traditional). The traditional Chinese version was published in journal Art Currents. (Jerry Wu\u2723).https://digital.kenyon.edu/zhoudocs/1108/thumbnail.jp

Resume 3: HU JianPing

This resume is scripted in both English and Chinese; the English translation excludes the hand-written additions added to the Chinese version on the first page. A digital copy of HU Jian Ping\u27s business card is also attached to this document entry. (Jerry Wu\u2723).https://digital.kenyon.edu/zhoudocs/1117/thumbnail.jp

Review: On HU JianPing

This review is scripted in majorly Chinese. (Jerry Wu\u2723).https://digital.kenyon.edu/zhoudocs/1118/thumbnail.jp

Resume 2: HU JianPing

This resume is scripted in Chinese. (Jerry Wu\u2723).https://digital.kenyon.edu/zhoudocs/1116/thumbnail.jp

Artist Note on his (HU JianPing) works

This note is printed and scripted in Chinese. (Jerry Wu\u2723).https://digital.kenyon.edu/zhoudocs/1109/thumbnail.jp