| 74LM317三端稳压器应用探索 |
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| 引用本文： | 王愉节. 74LM317三端稳压器应用探索[J]. 实验科学与技术, 2010, 8(2): 3-4,72 |
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| 作者姓名： | 王愉节 |
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| 作者单位： | 贵州大学电气工程学院,贵阳,550003 |
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| 摘 要： | 文章从电路原理分析入手，介绍了LM317集成三端稳压器的应用设计，该电路设计解决了民用级可调试三端稳压器输出电压、电流可调范围较小，带负载能力较弱等问题。设计方法为在三端稳压器的输入端、调整端加入运算放大器和三极管，使电路的输出电压、电流值只取决于电路参数R、Vbe的值。通过长期实践应用证明，此方法不但适用于负载需要较大电流的通用型稳压器，而且适用于进行电路实验和电子产品的电路开发。
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| 关 键 词： | 三端稳压器 电流扩展 截流保护 |
Application Exploration of 74LM317 Triple Pin Regulator Three-terminal Regulator |
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| WANG Yu-jie. Application Exploration of 74LM317 Triple Pin Regulator Three-terminal Regulator[J]. Experiment Science & Technology, 2010, 8(2): 3-4,72 |
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| Authors: | WANG Yu-jie |
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| Affiliation: | WANG Yu-jie(Electrical Engineering College,Guizhou University,Guiyang 550003,China) |
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| Abstract: | This paper introduces the application design of integrated 74LM317 three-terminal regulator by analyzing circuit principle.It can solve the following problems for the civil adjustable regulator.The tunable range of output voltage and current is small,and the load capacity is poor.The design methodology is that add arithmetic amplifier and transistor to the output and adjustment ports of the proposed regulator in order to make sure the output voltage and current depend on the circuit parameters R and Vbe onl... |
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| Keywords: | three-terminal regulator current expansion closure to protect |
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