Location:
Search - the chip of D
Search list
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
Platform: |
Size: 196608 |
Author: |
Hits:
Description: 这是我用过的非常好的A/D转换器，希望大家下来看看，在你的产品中使用高性能的芯片-This is what I used very good A/D converters, hope to see you down. you use the products of high-performance chip
Platform: |
Size: 243712 |
Author: hdhjl |
Hits:
Description: tvp5150视频编解码芯片驱动程序，cpu通过i2c控制该芯片，将驱动程序放入driver/i2c/chips目录下，并且在makefile文件中加入该驱动编译即可。-tvp5150 Video Decoder Chip driver, cpu through i2c control of the chip Add to Driver driver/i2c/chips directory, and the makefile to accede to the document can be driven compiler.
Platform: |
Size: 2048 |
Author: 李正路 |
Hits:
Description: 8098单片机片内A/D转换器应用的实验
多种方式的-8098 chip A/D converters use of the variety of ways
Platform: |
Size: 99328 |
Author: 周玲 |
Hits:
Description: usb芯片 CH375在 DSP2812中应用的c源码-usb chip CH375 DSP2812 in the application of c-source
Platform: |
Size: 4096 |
Author: 张洪 |
Hits:
Description: 在集成电路中，通常采用T型解码网络实现数字量往模拟的转换，再利用运算放大器完成模拟电流变为模拟电压的转换。所以，要把一个数字量变为模拟电压，实际上需要两个环节，先把数字量变为模拟电流，这是由D/A转换器完成的；再将模拟电流变成模拟电压，这是由运算放大器完成的。有时D/A转换器芯片只包含前一个环节，有些D/A转换器则包含两个环节，用前一种芯片时，需要外接运算放大器才能得到模拟电压。-In integrated circuits, the usual T-decode digital networks to analog conversion, and then complete the simulation of the use of op-amp current into the analog voltage conversion. Therefore, it is necessary to become a digital simulation of voltage, in fact, need two links, first into a digital simulation of currents, this is determined by D/A converters completed then simulate current into the analog voltage, this is determined by computing completed amplifier. Sometimes D/A converter chip contains only a part before, some D/A converter includes two aspects, before a chip, the need for external op-amp voltage can be simulated.
Platform: |
Size: 114688 |
Author: GFQ |
Hits:
Description: YL2440开发板扩展板原理图，结合核心板使用，基于S3c2440芯片-YL2440 development board expansion board schematic diagram, combined with the use of the core board, based on the S3C2440 chip
Platform: |
Size: 205824 |
Author: gaofeng |
Hits:
Description: a) 参考《TMS320LF240x DSP结构、原理及应用》，弄清TMS320LF2407的定时器功能。
b) 测试定时器Timer1，周期中断0.1秒，并控制灯D2闪烁时间为Ts
c) 单步运行程序，观察发光二极管D2的发光情况。
d) 程序装入片外，按“RUN”观察发光二极管D2的发光情况。
-a) reference to TMS320LF240x DSP structure, principle and application , the timer function to ascertain TMS320LF2407. b) test timer Timer1, periodic interruption of 0.1 seconds, and controlling the lights flicker D2 time Tsc) single-step operating procedures, observation of the light-emitting light-emitting diode D2 situation. d) procedures into the chip, according to RUN Observation of light-emitting light-emitting diode D2 situation.
Platform: |
Size: 7168 |
Author: chen |
Hits:
Description: 该应用软件可以实现大多数单片机的仿真实验-The application software can achieve the majority of single-chip simulation
Platform: |
Size: 26703872 |
Author: 吴昊 |
Hits:
Description: 编写verilog代码
利用实验箱上的A/D芯片完成模数转换。输入电压由实验箱提供，其幅值在0~5V间变化，由电位器控制。输出信号显示输入的模拟电压值，由数码管显示为2位BCD码的形式。-The preparation of Verilog code box on the use of experimental A/D chip to complete analog-digital conversion. Input voltage provided by the experimental box, and its amplitude in the 0 ~ 5V between changes in control by potentiometer. Output signal shows that the value of analog voltage input from a digital display for two BCD code of the form.
Platform: |
Size: 22528 |
Author: Ericwhu |
Hits:
Description: 本课题用传感器及单片机系统设计一个电子秤。在这一过程中将涉及到数据的采集，A/D转换，数据的处理，外扩显示器及键盘，及一个报警电路，以对物体的重量变化进行实时监控。-The subject single-chip sensors and an electronic scale system design. In this process involves data collection, A/D conversion, data processing, external monitor and extended keyboard, and an alarm circuit, the weight of objects to the changes in real-time monitoring.
Platform: |
Size: 8192 |
Author: 上官婉儿 |
Hits:
Description: A/D采样控制模块设计
A/D采样控制模块负责控制外部ADC0809芯片多路模拟输入量的选通以及实现对A/D采样过程的合理控制。此部分的设计根据《EDA技术与VHDL》P211——P212的例8-2编写，所不同的是这里将书中“ADDA<=1”的赋值语句改为“ADDA <=EN”，EN是所设置的输入按键用来控制INO与IN1间的通道选择。
-A/D sampling control module designed A/D sampling control modules responsible for controlling external ADC0809 chip multi-channel analog input, as well as the amount of strobe to achieve A/D sampling the reasonable control of the process. This part of the design under the EDA technology and VHDL P211- P212 preparation of the cases of 8-2, the difference is that here the book ADDA <= 1 of the assignment changed to ADDA <= EN , EN is the set of input buttons used to control between INO and IN1 channel selection.
Platform: |
Size: 1024 |
Author: xuye |
Hits:
Description: 波形种类：三角波、正弦波、方波、锯齿波 具有频率、波形种类显示和设置功能，即能通过按键设置指定频率，指定种类的波形输出，并在数码管上显示频率值及波形种类。输出电压：0V~+5V 通过单片机的程序控制输出的波形。在数码管显示出频率的大小。通过三个按键来控制波形的转换和频率的增减。从单片机出来之后经过D/A转换。将数字信号转换成模拟信号，结果在示波器上面观察。-Waveform types: triangular wave, sine wave, square wave, sawtooth wave has a frequency, waveform display and set the type of function, that is, through the button settings specified frequency, the specified types of waveform output, and digital tube display frequency value and the waveform type. Output voltage: 0V ~+ 5V MCU controlled through the output waveform. Shown in the digital frequency control size. Through three buttons to control the waveform and frequency increase or decrease in the conversion. After came out from the single-chip D/A conversion. Digital signals into analog signals, resulting in the above observation of oscilloscope.
Platform: |
Size: 47104 |
Author: 燕燕 |
Hits:
Description: 本文结合开发项目“基于C8051F040 单片机的嵌入式系统开发”，在深入研究嵌入式系统技术的基础上，提出了小型PLC 设计的系统方案。硬件结构以高性能的8 位嵌入式处理器C8051F040 为核心，充分利用其丰富的片上资源，扩展系统的输入输出功能。软件以开发的PLC 内核为核心，开发系统所需要的应用，将嵌入式PLC内核扩展为完整、实用的PLC 系统。-In this paper, the development project C8051F040 MCU-based embedded system development in-depth study of embedded system technology, based on a small PLC systems designed programs. Hardware structures to eight high-performance embedded processor C8051F040 as the core, take full advantage of its rich on-chip resources, the expansion of the system input and output functions. Software to develop the kernel at the core of the PLC to develop systems for applications, will be expanded core embedded PLC integrity, practical PLC system.
Platform: |
Size: 526336 |
Author: liujingyuan |
Hits:
Description: 利用热电偶转换器的单片机温度测控系统原理及应用部结构图热电偶放大与数字转换器-Thermocouple converters using single-chip temperature measurement and control system theory and application of the Department of structural plans to enlarge thermocouple and digital converters
Platform: |
Size: 1178624 |
Author: 金鹏 |
Hits:
Description: 目前国内变频器使用最多的两款DSP芯片的ADC程序，芯片种类 TMS320LF2407 TMS320F240, 内含两款芯片的寄存器头文件、cmd文件等。其他关键词 pwm svpwm-At present, the use of up to two converter DSP chip ADC procedures, the types of chip TMS320LF2407 TMS320F240, containing two chips register header files, cmd files. Other words pwm svpwm
Platform: |
Size: 53248 |
Author: |
Hits:
Description: 本人上传的是 单片机 直控按键演示(汇编).asm 源代码
-I uploaded is the demonstration of single-chip direct control keys (compilation). Asm source code
Platform: |
Size: 1024 |
Author: 张艳 |
Hits:
Description: 本人非常支持单片机设计DIY 在这里再次献出小弟的一点心意,下面是使用AT89S52驱动74HC4015,实现1选择8的数据通道切换器,可以在不8个通道出加上不同大小的电阻.可以用来单声道音量的大小控制.
下面作品图是小弟设计的廉价的 基于单片机的毕业设计 ,它还使用了无线接收发送模块,通过使用手上的遥控器能控制音量的大小,还加了一块HCF4052用于输入音道的选择,支持思路音频信号的输入,一路音频信号的输出:
-I very much support the single-chip design DIY here again gave a little boy s mind is to use the following AT89S52 drive 74HC4015, to achieve a choice of 8 switches the data channel, you can not add the 8-channel resistance of different sizes. Can used to the size of mono volume control. The following work plan is designed小弟cheap graduation based on single-chip design, it uses the wireless receiver send module, through the use of the hands of the remote control can control the volume size, but also Add a piece of HCF4052 Road for the importation of sound choices, to support the idea of audio signal input, the output audio signal all the way:
Platform: |
Size: 84992 |
Author: 彬 |
Hits:
Description: DMA调试经验，NIOS II环境下，适用altera公司芯片-DMA debugging experience, NIOS II environment, the application of altera-chip companies
Platform: |
Size: 1024 |
Author: yeyoushi |
Hits:
Description: 无线收发芯片nRF24L01在TMS320C5509A芯片上的实现程序。包括接收和发送，可实现Enhanced Shockburst收发功能。-NRF24L01 chip wireless transceiver chip in TMS320C5509A the realization of the procedure. Including receive and transmit, transceiver enables Enhanced Shockburst function.
Platform: |
Size: 344064 |
Author: harry |
Hits:
« 12
3
4
5
6
7
8
9
10
...
20
»