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zhiliudianliuyuan
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 )
- 2006-06-27 08:41:38下载
- 积分：1
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pid_wenkong
pid温控c程序算法，这是一个比较典型的PID处理程序，在使用单片机作为控制cpu时，请稍作简化，具体的PID参数必须由具体对象通过实验确定。由于单片机的处理速度和ram资源的限制，一般不采用浮点数运算，而将所有参数全部用整数，(pid temperature control algorithm c program)
- 2011-06-13 21:39:05下载
- 积分：1
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Pro03_Record_Audio
说明： 基于msp430f6638 实现录音回放功能(Realizing recording and playback function based on msp430f6638)
- 2020-07-28 23:18:39下载
- 积分：1
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DS2784库仑计测试
DS27xx系列的代码，库仑计测量电量的，（最好能够使用DS2780K来直接设置）(DS27xx series of code, coulometric meter measuring the amount of electricity (preferably by using DS2780K to set it directly))
- 2021-04-13 01:28:56下载
- 积分：1
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led-advertising-lamp
本程序能够实现广告灯的往正反方向来回移动。(Procedures to achieve the advertising lights move back and forth to the positive and negative direction.)
- 2013-04-23 22:14:05下载
- 积分：1
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天线pcb封装库
说明： 多种天线pcb封装设计方案（增益高，方向性好，稳定可靠）(Various antenna pcb packaging design schemes (high gain, good directivity, stable and reliable))
- 2020-12-30 08:58:59下载
- 积分：1
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MCU_Digital_Clock
说明： <基于单片机的数字钟设计>
个人做的毕业设计,带Protel图,源代码用proteus软件仿真通过,附有毕设论文(<Based on single-chip digital clock design> individuals do graduate design, with Protel map, the source code through the use of Proteus software simulation, complete with paper-based)
- 2008-12-05 21:26:31下载
- 积分：1
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keyscan
用键盘控制数码管，控制数码管进行静态显示，所有的数码管都显示同样的数字(With the keyboard control digital tube, digital tube display, static control all digital tube display the same number)
- 2015-08-11 17:22:55下载
- 积分：1
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pmsg_vol
永磁同步发电机整流系统控制仿真，运用电流解耦的电压电流双闭环控制。(Permanent magnet synchronous generator rectification system control simulation using the current decoupling of voltage and current double closed loop control.)
- 2017-01-08 10:45:27下载
- 积分：1
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ledcc2541
流水灯程序cc2541蓝牙裸奔,点亮第一个灯(Light water program cc2541 Bluetooth streaking, first lit the lamp)
- 2016-11-21 22:48:56下载
- 积分：1
