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其他 Measure Humidity using frequency counter
Measure Humidity using frequency counter
其他 measure 3 temperatures from senzors dallas ds18b20(1wire) to uart ... atmega16
measure 3 temperatures from senzors dallas ds18b20(1wire) to uart ... atmega16
模拟电子 2012TI电子设计大赛——微弱信号检测装置
微弱信号检测装置
四川理工学院 刘鹏飞、梁天德、曾学明
摘要：
本设计以TI的Launch Pad为核心板，采用锁相放大技术设计并制作了一套微弱信号检测装置，用以检测在强噪声背景下已知频率微弱正弦波信号的幅度值，并在液晶屏上数字显示出所测信号相应的幅度值。实验结果显示其抗干扰能力强，测量精度高。
关键词： ...
模拟电子 校准ADC内部偏移的光学微控制器DS4830
Abstract: The DS4830 optical microcontroller's analog-to-digital converter (ADC) offset can change with temperature and gainselection. However, the DS4830 allows users to measure the ADC internal offset. The measured ADC offset is added to the ADCoffset register to nullify the offset error. Th ...
模拟电子 DAC技术用语 (D/A Converters Defini
Differential Nonlinearity: Ideally, any two adjacent digitalcodes correspond to output analog voltages that are exactlyone LSB apart. Differential non-linearity is a measure of theworst case deviation from the ideal 1 LSB step. For example,a DAC with a 1.5 LSB output change for a 1 LSB digital codec ...
模拟电子 ADC转换器技术用语 (A/D Converter Defi
ANALOG INPUT BANDWIDTH is a measure of the frequencyat which the reconstructed output fundamental drops3 dB below its low frequency value for a full scale input. Thetest is performed with fIN equal to 100 kHz plus integer multiplesof fCLK. The input frequency at which the output is −3dB relati ...
电源技术 优化输电线路 精确测量电压驻波比(VSWR)
Abstract: Impedance mismatches in a radio-frequency (RF) electrical transmission line cause power loss andreflected energy. Voltage standing wave ratio (VSWR) is a way to measure transmission line imperfections. Thistutorial defines VSWR and explains how it is calculated. Finally, an antenna VSWR ...
单片机编程 基于89C52的二极管特性测试器的设计
利用单片机具有的智能程序控制的特点，设计了基于STC89C52单片机的"二极管特性测试器"，可对二极管一般特性进行快速测试。通过稳定线性电流源给二极管加载恒定电流，然后由高精度模数转换器测试其压降，以此为基础可判断二极管好坏、检测二极管极性和测试二极管伏安特性等，避免了用万用表测试只能测得极性而不知其特 ...
单片机编程 Microchip PIC系列单片机RS232通讯应用
Digitemp Junior – An RS-232 Port-Powered Digital Thermometer
Digitemp Jr. is a device that is designed to measure
and report ambient temperature. When connected to
an RS-232 port on any PC, it will periodically measure
and report in ASCII form the ambient temperature in
degrees Celsius ...
单片机编程 通用1553B总线的信息监控系统
在航电系统维护过程中，为解决定位故障的效率和降低维修成本等问题，提出了基于ICD（Interface Control Document，接口控制文件）的1553B总线的信息监控系统模型。该系统运用数据采集卡对总线中传输的信号有无失真、偏差等电气特性进行检测，并使用1553B通讯卡通过测控软件LabWindows/CVI编程与ICD数据库的动态链接，实现总 ...