小学数学微课程设计与制作

P8

HE78LXX_V11规格书赫尔微(HEERMICR)

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%

2019-03-26 953 0

P73

优秀作业参考《时光边影微视频工作室》

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

2018-11-08 3084 0

P11

HE4054规格书赫尔微(HEERMICR)

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

2019-03-26 700 0

P18

HE73XXM规格书赫尔微(HEERMICR)

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

2019-03-26 1216 0

P16

HE65XXM_V1.7规格书赫尔微(HEERMICR)

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

2019-03-26 758 0

P4

HE3141MR规格书赫尔微(HEERMICR)

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

2019-03-26 669 0

P16

HE4056规格书赫尔微(HEERMICR)

Features Protection of battery cell reverse connection Programmable charge current up to 1.1A No MOSFET sense resistor or blocking dioderequired Complete linear Charger for single Cell Lithium-IonBatteries CC and CV operation with thermal regulation tomaximize Rate without risk of overheating Preset 4.2V charge voltage with ±1% accuracy Automatic Recharge Two Status Indication for Charge status, no batteryand battery failure indicators C/10 charge termination 55μ A supply current in shutdown 2.9V trickle current charge threshold Soft-Start limits inrush current Battery Temperature Sensing Available in SOP-8 and ESOP-8 package

2019-03-26 791 0

P9

初中数学复习数学备考之函数

进入初中之后，第一次感受到函数给我们带来的震撼，第一次体会到学习函数的不易，不知同学们是否记得第一节课学习函数概念后的困惑。第一次运用直线解析式去解题带来的便捷，一次函数 k、b 与函数图像的性质联系、直线平行 k 相同，直线垂直 k 积为-1,两条直线求交点,只要把解析式联立去解方程组,就可以轻松解决，直线与方程之间建立了深厚的情感,友谊的小船越驶越远。

2020-05-08 2755 0

P63

高考数学-【数学】高考数学易错易混易忘题汇总全解析

1 高中高考数学易错易混易忘题分类汇总及解析 “会而不对，对而不全”一直以来成为制约学生数学成绩提高的重要因素，成为学生挥之不去的痛，如何解决这个问题对决定学生的高考成败起着至关重要的作用。本文结合笔者的多年高三教学经验精心挑选学

2020-03-15 4980 0

P28

数学运算

数学运算第 01 讲直接代入一、题型评述数学运算试题都是四选一的客观单项选择题，将选项直接代入进行验证，显然是一种准确、高效并且易于操作的重要方法。很多试题，正面求解相当困难，但结合选项来看却相当

2020-06-19 1171 0

P10

HE78XX(1.5A)_V11规格书赫尔微(HEERMICR)

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

2019-03-26 1090 0