| PA-Cap在滤波电路中的应用研究 |
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| 引用本文： | 王杰,徐友龙,屈秀文. PA-Cap在滤波电路中的应用研究[J]. 电子元件与材料, 2005, 24(9): 55-57 |
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| 作者姓名： | 王杰 徐友龙 屈秀文 |
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| 作者单位： | 西安交通大学电信学院,陕西,西安,710049;西安交通大学电信学院,陕西,西安,710049;西安交通大学电信学院,陕西,西安,710049 |
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| 基金项目： | 高校优秀青年教学科研奖励基金 |
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| 摘 要： | 以微机开关电源的滤波电路(工作频率为64.5kHz)来研究PA-Cap(片式聚合物铝固体电容器)在实际电路中的应用情况。实验发现用实测容量28.6μF的PA-Cap代替实测容量为960μF的液体铝电解电容器,可以得到同样的滤波效果;甚至可以用60μF的PA-Cap代替原电路中的960μF的电容和350μH的电感也得到同样的滤波效果。如果用片式二氧化锰钽电解电容,则分别需要127μF和192μF。其主要原因是采用高电导率的聚合物作阴极的PA-Cap具有优异的阻抗频率特性。
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| 关 键 词： | 电子技术 片式聚合物铝固体电容器 微机开关电源 滤波电路 |
| 文章编号： | 1001-2028（2005）09-0055-03 |
| 收稿时间： | 2005-04-22 |
| 修稿时间： | 2005-04-22 |
Practical Applications of Chip Polymer Aluminum Electrolytic Capacitor in Filter Circuit |
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| WANG Jie,XU You-long,QU Xiu-wen. Practical Applications of Chip Polymer Aluminum Electrolytic Capacitor in Filter Circuit[J]. Electronic Components & Materials, 2005, 24(9): 55-57 |
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| Authors: | WANG Jie XU You-long QU Xiu-wen |
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| Abstract: | A chip polymer aluminum electrolytic capacitor (PA-Cap) was put to use in the filter circuit of the switch power source of microcomputer,which operating frequency is about 64.5 kHz. It is found that the effect of filter of a PA-Cap of 28.6 μF is equivalent to a traditional aluminum electrolytic capacitor of 960 μF. In a same π-shape filter circuit,a PA-Cap of 60 μF can substitute the combination of a traditional aluminum electrolytic capacitor of 960 μF and an inductor of 350 μH. If a chip tantalum electrolytic capacitor was used,the capacitance must be 127 μF and 192 μF,respectively. All of the reasons are because the PA-Cap has an excellent impedance frequency characteristic. |
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| Keywords: | electronic technology chip polymer aluminum solid electrolytic capacitors the switch power source of microcomputer filter circuit |
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