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VC书籍 The production of this book required the efforts of many people, but two in particular deserve to be
The production of this book required the efforts of many people, but two in particular deserve to be singled out for their diligent, sustained, and unselfish efforts. Sally Stickney, the book s principal editor, navigated me through that minefield called the English language and contributed greatly ...
技术资料 Learn.More.Python.3.the.Hard.Way.2017.9.pdf
1. Getting Started: You learn quick hacks to start a project.
2. Data Structures: I don’t teach every single data structure, but I get you started down the path to learning them more completely.
3. Algorithms: Data structures are fairly pointless without a way to process them.
4. Parsing Text: The ...
技术资料 nettoplcsim
对很多初学西门子软件极其仿真软件和intouch软件的朋友有很大的帮组，本人曾经走了很多弯路，用了很长时间才down到的一个intouch和step7仿真通讯的小软件，简便易用，支持IP协议，设置Ip地址后就可通讯，希望能帮助到初学着。
技术资料 基于FPGA的数字下变频技术研究
数字下变频(DDC：Digital Down Convert)是将中频信号数字下变频至零中频且使信号速率下降至适合通用DSP器件处理速率的技术。实现这种功能的数字下变频器是软件无线电的核心部分。采用专用DDC芯片完成数字下变频，虽然具...
技术资料 PW2163-2.0.pdf规格书下载
The PW2163 is a high efficiency 500 kHz synchronous step-down DC-DC converter capable ofdelivering 3A current. The PW2163 operates over a wide input voltage range from 4.5V to 18V andintegrates main switch and synchronous switch with very low RDS(ON) to minimize the conductionloss. Low output voltag ...
单片机编程 MC9S08QG8英文资料 pdf
MC9S08QG8英文资料
The MC9S08QG8 is the newest member of the Freescale 8-bit family of highly integratedmicrocontrollers, based on the high-performance yet low power HCS08 core. The MC9S08QG8is an excellent solution for power-sensitive applications with extended battery life and maximum performance d ...
技术资料 射频技术重点入门基础 天线射频RF基础
射频技术重点入门基础 天线射频RF基础频率和波长及线缆电介常数关系
相位和波长关系
什么是dB和dBm
回波损耗(RL)和驻波比(VSWR)关系
阻抗和衰减
互调(IM3,PIM)
ＲＦ天线常用指标：
极化 ( Polarisation )
波束宽( Beamwidth)
旁瓣抑制 (Side Lobe Suppression)
下倾角 (Down Tilt)
前后比 (Front to back Ratio)
隔离度 ( I ...
电源技术 100-15V TO 12V DCDC 原理图 PCB BOM表
高的工作电压高达100V N双N沟道MOSFET同步驱动 The D810DCDC is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 100V, making it ideal for telecom and automotive applications. The D810DCDC uses a constant on-time valley current control architecture t ...
技术资料 PW2330-2.0.pdf规格书下载
PW2330 develops a high efficiency synchronous step down DC-DC converter capable of delivering3A output current. PW2330 operates over a wide input voltage range from 4.5V to 30V andintegrates main switch and synchronous switch with very low RDS(ON) to minimize the conductionloss. PW2330 adopts the pr ...
技术资料 PW2205-2.0.pdf规格书下载
PW2205 develops a high efficiency synchronous step-down DC-DC converter capable of delivering5A output current. PW2205 operates over a wide input voltage range from 4.5V to 30V andintegrates main switch and synchronous switch with very low RDS(ON) to minimize the conductionloss.PW2205 adopts the ins ...