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电解电容厂家分析外部环境对铝电解电容的影响
作者:电解电容厂家 来源:http://www.jnhongbao.com 日期:2020-09-30 11:30 浏览

  外部因素对铝电解电容的特性和寿命有较大影响,根据电解电容厂家的经验总结出影响因素主要有以下几种情形;

  External factors have great influence on the characteristics and life of aluminum electrolytic capacitors. According to the experience of capacitor manufacturers, the main influencing factors are as follows;

  1、 频率太高。通过电容器的电流I=2π FCV,随所加频率的增加,再加上表层效应,电极的有效面积与频率的平方根成反比,所以若加以超额频率,电解电容因过热而导致不良。

  1. Too high frequency. The current through the capacitor I = 2 π FCV. With the increase of frequency and the surface effect, the effective area of electrode is inversely proportional to the square root of frequency.

  2、 电压过高。使用电路的电压长期超过该电容本身的额定电压,不仅会缩短电容的使用寿命,并会有杂音,严重者电容会爆炸。

  2. The voltage is too high. If the voltage of the circuit exceeds the rated voltage of the capacitor itself for a long time, it will not only shorten the service life of the capacitor, but also cause noise, and in serious cases, the capacitor will explode.

电解电容厂家

  3、 高温环境:绝缘电阻变低,易产生击穿或寿命变短,一旦高温,其串联电阻会增大而缩短寿命。

  3. High temperature environment: low insulation resistance, easy to produce breakdown or short life, once high temperature, its series resistance will increase and shorten life.

  4、 高湿度环境:高湿度会使外层绝缘物吸湿而造成绝缘不良或正极引出端子因高湿度与铝壳(作为电容负极)相通形成短路。

  4. High humidity environment: high humidity will make the outer insulation moisture absorption, resulting in poor insulation or short circuit between the positive lead-in terminal and the aluminum shell (as the negative electrode of capacitor) due to high humidity.

  5、 低气压环境:电容之静电容量会因气压的高低而变化。

  5. Low pressure environment: the electrostatic capacity of the capacitor varies with the air pressure.

  6、 电容本身机械压力过大:外加机械压力,电解内压骤增,电容内部之电解液外漏,不仅会导致电容本体性能劣化,更会使电容附近之零部件腐蚀受损。

  6. The mechanical pressure of the capacitor itself is too high: the external mechanical pressure, the sudden increase of electrolytic internal pressure, and the leakage of electrolyte inside the capacitor will not only lead to the deterioration of the performance of the capacitor itself, but also cause the corrosion damage of the parts near the capacitor.