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: 197253 |
Author:DAI |
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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 Platform: |
Size: 196608 |
Author: |
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Description: IRF510是一个常用的mos管.他的主要应用不是在其放大的方面.而是在其恒流方面,因此做为直流电流源的设计有很高的灵敏度-IRF510 is a commonly used tube mos. His main application is not in its enlarged area. But in its constant current context, as a DC current source, therefore the design has a high sensitivity Platform: |
Size: 69632 |
Author: |
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Description: 一种由运放构成的恒流源电路,文章中详细介绍了运放的构成及计算-analysis of voltage controlled constant dc current source on OP Platform: |
Size: 92160 |
Author:崔新 |
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Description: 数控的直流恒流源的设计,采用的是TLV5618和max541两块芯片。-Numerical control dc constant-current source design。Numerical control dc constant-current source is designed using TLV5618 and max541 two chip.
Platform: |
Size: 1145856 |
Author:黄津毅 |
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Description: 实现了一个三极管构成的恒流源,可以通过DAC输出的直流控制输出电流的大小,单片机为MSP430F1611 ,IAR开发-Implements a transistor constitute constant current source, can pass DAC output dc control output current size, microcomputer as the MSP430F1611, IAR development Platform: |
Size: 58368 |
Author:苏玉萍 |
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Description: 实现了一个双运放构成的恒流源,可以通过DAC输出的直流控制输出电流的大小,单片机为MSP430F1611 ,IAR开发-Implements a double op-amp constitute a constant current source, can pass DAC output dc control output current size, microcomputer as the MSP430F1611, IAR development Platform: |
Size: 134144 |
Author:苏玉萍 |
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Description: 以凌阳SPCE061A单片机为核心控制器,具有电流可预置、可步进调整、输出的电流信号和预置的电流信号可同时显示的数控直流电流源。系统主要包括:凌阳SPCE061A精简开发板、键盘与显示电路、压控恒流源电路、校正电路、电源电路-Ling Yang SPCE061A MCU as the core controller, a current can be preset, stepping adjustment, output current signal and the preset current signals at the same time display control DC current source. The system mainly includes: Ling Yang SPCE061A streamline development board, keyboard and display circuit, voltage controlled constant current source circuit, correction circuit, power supply circuit
Platform: |
Size: 37888 |
Author:王尹 |
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Description: 一种新型低纹波高精度数子控制直流恒电流源-A new low-ripple high-precision control of the number of sub-constant current source DC Platform: |
Size: 286720 |
Author:欧阳 |
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Description: 数子控制直流输出恒流源,可以对比预置值和实际测量值-Number of sub-control DC output constant current source, you can compare the actual measured value and the preset value Platform: |
Size: 77824 |
Author:欧阳 |
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Description: design of SRM
The Mathcad programs were saved as version 6 files from version 2001. Since no special features not available in version 6 were used it is expected that they can be run by Mathcad 6 or later.
Flux.mcd
A program to plot the SRM’s flux linkage curves.
Torque.mcd
A program to plot the SRM’s static torque curves.
Motorsim.mcd
A program to simulate the SRM running at constant speed and driven from a constant DC source. It assumes the SRM phases are independent and simulates one phase for one cycle. It assumes the torque and current for the simulated phase is equal to that for all of the other phases with the appropriate time shift. It predicts the performance of the machine and inverter calculating such things as weight, power out, power loss, and phase current.
Platform: |
Size: 1472512 |
Author:mohammed.nizamuddin |
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Description: 一种基于单片机控制的数控直流恒流源,包括控制和显示程序-A numerical control based on single chip microcomputer control dc constant current source, including the control and display program
Platform: |
Size: 73728 |
Author:yangjianhua |
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