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Description: 基于c8051f330芯片开发的电机正反转控制系统，能同时完成参数的设定与显示，系统具有4~20mA的标准模拟信号输出-c8051f330 chip development based on the reversion motor control system parameters can be completed simultaneously with the creation shows that the system has a 4-20mA analog signal output standards
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Size: 39510 |
Author: 肖业伟 |
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Description: 本系统以直流电流源为核心，AT89S52单片机为主控制器，通过键盘来设置直流电源的输出电流，设置步进等级可达1mA，并可由数码管显示实际输出电流值和电流设定值。本系统由单片机程控输出数字信号，经过D/A转换器（AD7543）输出模拟量，再经过运算放大器隔离放大，控制输出功率管的基极，随着功率管基极电压的变化而输出不同的电流。单片机系统还兼顾对恒流源进行实时监控，输出电流经过电流/电压转变后，通过A/D转换芯片，实时把模拟量转化为数据量，再经单片机分析处理， 通过数据形式的反馈环节，使电流更加稳定，这样构成稳定的压控电流源。实际测试结果表明，本系统输出电流稳定，不随负载和环境温度变化，并具有很高的精度，输出电流误差范围±5mA，输出电流可在20mA~2000mA范围内任意设定，因而可实际应用于需要高稳定度小功率恒流源的领域。-the system to DC current source to the core, MCU AT89S52 main controller, through the keyboard to set up DC power supply output current, set up to 1mA Stepping grades, digital control can be shown by the actual output current value and current setting. The system consists of programmable microcontroller digital signal output, after the D / A converters (AD7543) analog output. After Operational Amplifiers isolation, amplification and control of the output power base. With the power of the base voltage changes in the output current. SCM system also takes on the constant current source for real-time monitoring, after current output current / voltage changes, the A / D converter chip, real-time conversion from analog to the volume of data and then analyzed by the MCU, through data link in the
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Size: 197253 |
Author: DAI |
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Description: IDC3516-4-20mA电流环隔离接口芯片的应用-IDC3516-4-20mA current loop isolation Application Interface Chip
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Size: 34388 |
Author: gw |
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Description: PIC16F876单片机,有4到20MA电流输出,低功耗等特点,使用于工业仪表行业-PIC16F876 microcontroller, to a four 20MA current output, low power consumption and other characteristics, Instrumentation used in industrial sectors
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Size: 57187 |
Author: 陈超 |
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Description: 显字数显表源程序，拿来就可以用，采集4~20MA电流，-significant source of wordage a table, can be taken out, collecting 4-20MA current,
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Size: 126958 |
Author: 何宏 |
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Description: 本文给出了一种利用软件实现4～20mA传感器数据转换的方法，消除了硬件电路中电压放大器输出端的残留电压，保证了数据转换精度-this paper, the use of software to achieve a 4-20mA sensor data conversion methods Elimination of hardware circuit voltage amplifier output voltage of the residue, ensuring the accuracy of data conversion
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Size: 6425 |
Author: 郭九生 |
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Description: 8051驱动LED的4至20毫安的PWM程序。C环境
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Size: 57421 |
Author: 李晨光 |
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Description: 工业仪表常用到4-20mA输出此程序通过C51单片机模拟输出PWM
提供了很好的思路和事例
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Size: 57425 |
Author: ya--ya |
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Description: IDC3516-4-20mA电流环隔离接口芯片的应用-IDC3516-4-20mA current loop isolation Application Interface Chip
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Size: 33792 |
Author: gw |
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Description: Programming Embedded Systems
By Michael Barr, Anthony Massa
...............................................
Publisher: O Reilly
Pub Date: October 01, 2006
ISBN: 0-596-00983-6
Pages: 304 -Embedded Systems Programming By Michael B. arr. Anthony Massa ...................... ................... Publisher : O Reilly Pub Date : October 01, 2006 ISBN : 0-596-00983-6 Pages : 304
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Size: 552960 |
Author: 刘健华 |
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Description: 本文给出了一种利用软件实现4～20mA传感器数据转换的方法，消除了硬件电路中电压放大器输出端的残留电压，保证了数据转换精度-this paper, the use of software to achieve a 4-20mA sensor data conversion methods Elimination of hardware circuit voltage amplifier output voltage of the residue, ensuring the accuracy of data conversion
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Size: 6144 |
Author: 郭九生 |
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Description: 8051驱动LED的4至20毫安的PWM程序。C环境-LED driver 8051 of 4-20 mA process of PWM. C environment
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Size: 57344 |
Author: 李晨光 |
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Description: 20ma的电流环通信回路仍应用于一些远程通信的场合，本文为其实现过程。-20ma current loop
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Size: 30720 |
Author: wang |
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Description: 智能仪表万能信号输入级电路设计，现在的工业显示控制仪表都具有万能输入，何为万能输入？万能输入可以输入20多种传感器信号，如
线性信号4~20ma，0~20ma，0~10ma，0~5v，1~5v，0~10v，
热电偶，T,R,J,B,S,K,E,
热电阻，PT100,CU50,PT1000等。 -Intelligent Instrument universal signal input level circuit design, industrial display and control instrument now has a universal input, what is universal input? Universal Input 20 kinds of sensor signals can be input, such as linear signal 4 ~ 20ma, 0 ~ 20ma, 0 ~ 10ma, 0 ~ 5v, 1 ~ 5v, 0 ~ 10v, thermocouple, T, R, J, B, S, K, E, thermal resistance, PT100, CU50, PT1000 and so on.
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Size: 102400 |
Author: 别问 |
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Description: 简易实用型0-10V 0-20mA的信号转换电路图纸-Simple practical 0-10 V 0 to 20 mA signal converter circuit drawings
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Size: 82944 |
Author: 郑博 |
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Description: 在MPLAB运行，用PICC编译，输出交流0—20mA,采用PIC16F883-MPLAB run, PICC compiler output AC 0-20mA, PIC16F883
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Size: 9216 |
Author: 杨港 |
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Description: preteus仿真 4-20mA输出 加数据表(protues multisim 4-20mA)
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Size: 20480 |
Author: 蝈蝈s
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Description: 基于STM32采集4-20ma转成0-3.3v电压输入。(Based on STM32 acquisition, 4-20mA converted to 0-3.3v voltage input.)
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Size: 1943552 |
Author: 我爱开发
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Description: MT4指标：移动平均线的延生性指标
移动平均线的延生性指标，绝对比20MA,200MA之类的好用
该交易系统包含彩虹移动平均线组合，随机指标(Stochastic)等技术指标。该交易系统适用于趋势行情。
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Size: 23016 |
Author: haiuyan |
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