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时光 微视频工作室 ┓ 边影 时光边影微视频工作室 ┓ ┓ 艾梦 l 赵梦瑶 l 欧阳澍华 l 左小涵 l 金禹成 目 录 CONTENTS 工作室概况 核心职员与职责 主营业务及 盈利方式 01 市场分析与调研

Features Protection of battery cell reverse connection Programmable charge current up to 800mA No MOSFET sense resistor or blocking dioderequired Complete linear Charger for single CellLithium-Ion Batteries CC and CV operation with thermal regulationto maximize Rate without risk of overheating Preset 4.2V charge voltage with ±1%accuracy Automatic Recharge C/10 charge termination 2.9V trickle current charge threshold Soft-Start limits inrush current Available in SOT23-5 package

Features Output Current of 100mA Thermal Overload Protection Short Circuit Protection Output transistor safe area protection No external components Package：SOT89-3 and TO92 Output voltage accuracy: tolerance ±3%

Features Hall effect Switch Sensor Wide operating voltagerange :3.5V~35V Open Collector Pre-Driver Maximum output sink current: 50mA Operating Temperature:-40℃~+125℃ Package：SOT23-3L N-pole inductionApplications Rotor Position Sensing Current Switch Brush-less DC Motor Revolution counting Encoder RPM Detection Brush-less DC Fan Speed measurement

Features External parts: Coil, capacitor Output voltage: Settable to between2.1V to 5.5V in 0.1V steps Maximum Oscillationfrequency :300KHz Accuracy of ±2% High efficiency :95% Package: SOT23 and TO92Applications Digital cameras Electronic notebooks and PDAS Portable CD/MD players Cameras , video equipment Communications equipment Power supply for microcomputers

Features Low power consumption Low voltage drop Low temperature coefficient High input voltage (up to 18V) Output voltage accuracy: tolerance ±2% SOT89, SOT23 packageApplications Battery-powered equipment Communication equipment Audio/Video equipment

Features Low power consumption Low voltage drop Low temperature coefficient Ultra low quiescent current: 2μA(typ.) High input voltage (up to 15V) Maximum output current: 250mA Output voltage accuracy: tolerance ±2% TO92, SOT89 ,SOT23-3 and SOT23 package

语文三年级上册-教学设计-教案-2 吹泡泡 1 语文教学设计 教 材：语文三年级上册 课 文：2 吹泡泡 板 块：教学设计—教案 设计思路 《吹泡泡》是冰心奶奶回忆儿时玩吹泡泡游戏的文章，表达了作者对童年时

（设计意图：认识水污染的严重性，引出水污染。 ）. . 2．揭示课题：那么水是怎么受到污染的？有什么有效的办法来解决？今 天这节课老师和大家一起来学习和探索水污染的几个问题。 （板书课题：污水 和污水处理。） 3. 设疑：知道什么叫污水？

Features Output Current of 1.5A Thermal Overload Protection Short Circuit Protection Output transistor safe area protection No external components Package：TO220 Output voltage accuracy: tolerance ±2%General DescriptionTX78XX is three-terminal positive regulators. Oneof these regulators can deliver up to 1.5A ofoutput current. The internal limiting and thermal-shutdown features of the regulator make themessentially immune to overload. When used as areplacement for a zener diode -resistorCombination, an effective improvement in outputimpedance can be obtained, together with

八滩镇中心小学写字指导课备课专用纸 班级 五（ ） 执教者 教学时间 课题 钢笔《写字》 第 1 课 教学目标 1.学会写炊、恍、锻、炼的方法，掌握左右结构的汉字书写规则。 2.学会正确使用钢笔规范地书写，注意培养良好的书写习惯。

幼儿园语言课：神奇的小路 活动目标 1、喜欢倾听故事，初步理解故事内容，感受秋风、落叶和小动物的亲密关系。 2、能大胆想象，体验各种小动物走过秋叶铺成的小路的情景 。 活动准备 1、课件《神奇的小路》

语文三年级上册-教学设计-教案-3 蜗牛 1 语文教学设计 教 材：语文三年级上册 课 文：3 蜗牛 板 块：教学设计—教案 设计思路 这篇课文是精读课文。写作者听到一首歌谣然后回忆童年时观察蜗牛的事。

翼趣全脑参考教案第五册 北京翼趣文化发展有限公司 www：yqjy168_--_ 18901082018 翼趣真有趣 学习不费力 翼趣全脑参考教案 第五册翼趣全脑参考教案第五册 北京翼趣文化发展有限公司

Ⅰ. 阅读理解In most developed countries the government providesfree education for children because it realizes that educatedcitizens are useful to the country in their later life. Mostcountries also have private education. This means that parents can payto send their children to certain schools. People who agree with thissystem say that it gives parents a larger choice of schools. Other peoplethink that private schools give the children who go to them an unfairadvantage over other children.

Ⅰ. 用适当的关系词填空1. The Second World War __________ millions of people were killedended in 1945.2. He was born in the year __________ the Anti-Japanese War brokeout.3. He was the man by __________ Master of Game was translated.4. Is that the reason __________ you are in favor of the proposal?5. The magazine for __________ Betty paid one dollar was very good.6. Here is so heavy a box __________ can be lifted by nobody.7. Is this the shop __________ sells children’s clothing?

Ⅰ. 根据汉语提示写出单词的正确形式1. What will happen if the two parties fail to reach an ____________ (协议)?2. Strict management is one of the most important ____________ (特点)of my school.3. Shanghai is one of the ____________ (地区)in China with developedeconomy and culture.4. My cousin makes a living by selling agricultural ____________ (产品)inthe market.5. There were ____________ (代表)from 24 countries in the meeting Ijust returned from.6. There is a garden on the ____________ (对面的)side of the street.7. I forgot to ____________ (签名)the application form.8. A king must teach his prince how to ____________ (统治).

less widely held, is that increasing particulate(微粒、 颗 粒 )matter in the atmosphere is blocking sunlight

child, Mark has been crazy about basketball. 自从是个孩子时马克就一直迷恋篮球。 10. In the dark forests _____________

Ⅰ. 把下列句子改为被动语态1. He had broken his arm when I saw him.2. Lucy had already completed the project when I arrived.3. I had sold out the ticket when she came.4. They began to climb the mountain after they had bought all the foodand drinks.5. I had turned off all the lights before I went to bed.答案：1. When I saw him his arm had been broken.2. When I arrived the project had already been completed.