音响分频器使用的有机薄膜电容器

音响分频器中使用的有机薄膜电容器 ,其阻抗和损耗频率特性的优劣直接影响分频器的阻抗及功率特性 ,从而影响音响的质量。在选用电容器时 ,应注意 :1选用无感式卷绕的金属化有机薄膜电容器 ,使 LESL趋于零 ;2选用边缘加厚的金属化有机薄膜电容器 ,降低极板电阻、接触电阻和接触损耗 ,改善电容器的阻抗和损耗频率特性 ,满足分频器的阻抗匹配和功率匹配的要求 ;3首选粗短结构的电容器 ;4选用圆形结构电容器 ,避免连续性自愈发生。正确选择优质电容器 ,满足良好的听觉效果。

Film Capacitors for Audio Frequency Dividers

ELECTRONIC COMPONENTS & MATERIALS (China),Vol 19, No 2, P 35 37 (Apr 2000) In Chinese The impedance and power characteristics of audio frequency divider are highly influenced by the impedance and loss frequency characteristic of capacitors For audio frequency dividers, the preferable capacitors are (1) non inductive metallized film capacitors for reducing equivalent series inductance to nearly zero; (2) edge raised metallized film capacitors for reducing electrode resistance, contact resistance and contact loss, and improving impedance and loss frequency characteristic, meeting the impedance and power matching requirement of the dividers; (3) pyknic capacitors; (4) round capacitors for avoiding continuously self healing (5 refs )