刚刚上传的是工程B习题答案，有需要的可下载看看
标签： 工程制图
上传时间： 2018-03-01
上传用户：lgdxy
Py3爬取B站视频弹幕。。。。。。。。。。。。。
上传时间： 2019-12-17
上传用户：wine
1998年建模B题，内含解题方法解题步骤。
上传时间： 2020-05-02
上传用户：isomerrrr
This book is an entry-level text on the technology of telecommunications. It has been crafted with the newcomer in mind. The eighteen chapters of text have been prepared for high-school graduates who understand algebra, logarithms, and basic electrical prin- ciples such as Ohm’s law. However, many users require support in these areas so Appen- dices A and B review the essentials of electricity and mathematics through logarithms.
标签： Telecommunications Fundamentals 1st of ed
上传时间： 2020-05-27
上传用户：shancjb
This book is an entry-level text on the technology of telecommunications. It has been crafted with the newcomer in mind. The twenty-one chapters of text have been prepared for high-school graduates who understand algebra, logarithms, and the basic principles of electricity such as Ohm’s law. However, it is appreciated that many readers require support in these areas. Appendices A and B review the essentials of electricity and mathematics up through logarithms. This material was placed in the appendices so as not to distract from the main theme, the technology of telecommunication systems. Another topic that many in the industry find difficult is the use of decibels and derived units. Appendix C provides the reader a basic understanding of decibels and their applications. The only mathematics necessary is an understanding of the powers of ten
标签： Telecommunications Fundamentals 2nd of ed
上传时间： 2020-05-27
上传用户：shancjb
This edition updates and continues the series of books based on the residential courses on radiowave propagation organised by the IEE/IET. The first course was held in 1974, with lectures by H. Page, P. Matthews, D. Parsons, M.W. Gough, P.A. Watson, E. Hickin, T. Pratt, P. Knight, T.B. Jones, P.A. Bradley, B. Burgess and H. Rishbeth.
标签： Propagation Radiowaves edition 3rd of
上传时间： 2020-05-31
上传用户：shancjb
全国大学生电子设计竞赛2020年TI杯模拟电子系统设计专题邀请赛多种幅度调制信号发生电路（B 题）
上传时间： 2021-07-08
上传用户：st-15180703380
NS32F103x8(B) 软件硬件兼容STM32F103C8/CBT6，实际测试过，完全可以兼容。支持国产，国产加油！
标签： ns32f103x8 STM32
上传时间： 2021-10-31
上传用户：
5V USB扁口接口TP4055锂离子电池充电接口板ALTIUM设计硬件原理图+PCB文件，2层B板手设计，大小为33*18mm,，可以做为你的学习设计参考。TP4055 是一款完整的单节锂离子电池充电器，带电池正负极反接保护，采用恒定 电流/恒定电压线性控制。其 SOT 封装与较少的外部元件数目使得 TP4055 成为便携式应 用的理想选择。TP4055 可以适合 USB 电源和适配器电源工作。 由于采用了内部 PMOSFET 架构，加上防倒充电路，所以不需要外部检测电阻器和 隔离二极管。热反馈可对充电电流进行自动调节，以便在大功率操作或高环境温度条件 下对芯片温度加以限制。充满电压固定于 4.2V，而充电电流可通过一个电阻器进行外部 设置。当电池达到 4.2V 之后，充电电流降至设定值 1/10，TP4055 将自动终止充电。 当输入电压（交流适配器或 USB 电源）被拿掉时，TP4055 自动进入一个低电流状 态，电池漏电流在 2uA 以下。TP4055 的其他特点包括充电电流监控器、欠压闭锁、自 动再充电和一个用于指示充电结束和输入电压接入的状态引脚。
上传时间： 2021-11-22
上传用户：trh505
该文档为A、B、AB、D类音频功率放大器简介文档，是一份很不错的参考资料，具有较高参考价值，感兴趣的可以下载看看………………
上传时间： 2021-11-28
上传用户：qdxqdxqdxqdx
