| 基于脉宽调制的程控恒流源设计 |
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| 引用本文： | 王锦仁,;段兆丽.基于脉宽调制的程控恒流源设计[J].佳木斯工学院学报,2008(2):250-252. |
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| 作者姓名： | 王锦仁 ;段兆丽 |
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| 作者单位： | [1]沈阳化工学院,辽宁沈阳110142; [2]哈尔滨理工大学,黑龙江哈尔滨150080 |
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| 摘 要： | 详细介绍了程控恒流源电路的设计，分析了电路原理．程控恒流源电路是由单片机片内定时器输出的脉宽调制信号来控制，并用该电压控制恒流源产生可控电流．通过单片机的键盘接口对输出电流进行设定，实现输出电流的连续调节及电流的动态测量．由MSP430单片机及其外围电路经过巧妙的设计构成，电路的性能十分理想．
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| 关 键 词： | 脉宽调制 程控恒流源 MSP430单片机 |
Design of Programming Control Constant- current Source |
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| Affiliation: | WANG Jin-ren,DUAN Zhao-li(1.Shenyang Institute of Chemical Technology,Shenyang 110142,China ;2.Harbin University of Science and Technology,Harbin 150080,China) |
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| Abstract: | The design of a program - controlled constant - current source circuit was introduced in detail. The principle of the circuit is that the controllable voltage which is generated by microcomputer＇s timer outputting pulsewidth signal is applied to produce controllable current. Current output is set by microcomputer＇s interface key. Finally, the current is measured dynamically and its output is regulated continuously. the MSP430 microcomputer and peripheral components were used artfully in the circuit and the performance of the circuit is very perfect. |
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| Keywords: | pulse - width modulation program - controlled constant - current source MSP430 microcomputer |
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