JP2000299251A - Electrolytic capacitor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain well-balanced sounds over the range from low to high pitches and improve sound quality by forming a separator of a banana fiber- incorporated paper. SOLUTION: An aluminum electrolytic capacitor has a capacitor element 6 thereof prepared by forming a separator 3 of a banana fiber and Manila hemp-incorporated paper and rolling an anode foil 1 and a cathode foil 2 with the separator 3 interposed therebetween together. The element 6 is then housed in a case while impregnated with an electrolytic solution, and the opening of the case is closed with an elastic closure body. A 50 μm thick paper incorporating 50% of Manila hemp fiber and 50% of banana fiber, or a 50 μm thick paper incorporating 20% of Manila hemp fiber and 80% of banana fiber is used as the separator 3. This improves the resolution over the low pitch range, increases the amount of sound information, and provides well-balanced sounds.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electrolytic capacitor,
Particularly, the present invention relates to an electrolytic capacitor suitable for audio equipment.

[0002]

2. Description of the Related Art In a conventional electrolytic capacitor, a capacitor element in which an anode foil and a cathode foil which have been subjected to an etching process and an oxide film formation process are wound through a separator is impregnated with an electrolytic solution and stored in a metal case. The opening was sealed.

[0003]

The above-mentioned conventional electrolytic capacitor has a kraft paper, a manila paper,
Mixed paper of Kraft and Manila hemp or synthetic fiber such as polypropylene was used, but when used for power supply smoothing circuits and signal circuits of audio equipment, balanced sound from low to high frequencies could not be obtained, resulting in sound quality There were drawbacks such as bad. For this reason, methods such as hard winding of the capacitor element and fixing of the periphery of the element with a fixing material have been attempted, but no satisfactory element has been obtained.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and an electrolytic capacitor comprising a capacitor element wound or laminated between opposed electrode foils with a separator interposed therebetween is impregnated with an electrolytic solution. An electrolytic capacitor, wherein the separator is a mixed paper containing banana fibers.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION By using a mixed paper of banana fibers as a separator of an aluminum electrolytic capacitor, a balanced sound from a low frequency to a high frequency can be obtained.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS.
In an aluminum electrolytic capacitor having a size of 30 μF, an outer dimension of 10 mm in diameter and a length of 20 mm, a mixed paper of banana fiber and manila hemp was used as a separator 3, and an anode foil 1 and a cathode foil 2 were used.
To form a capacitor element 6 by being wound therebetween.
This is impregnated with an electrolytic solution and stored in a case 8 to store the elastic sealing body 7.
To seal the opening. Reference numeral 4 denotes an anode lead, and 5 denotes a cathode lead.

[0007] In Example 1, a mixed paper of 50% Manila hemp fiber and 50% banana fiber and having a thickness of 50 µm was used as a separator.
In Example 2, a mixed paper made of 20% of Manila hemp fiber and 80% of banana fiber and having a thickness of 50 μm was used. As a conventional example, an aluminum electrolytic capacitor was manufactured using manila hemp paper, and was used as an output coupling capacitor of a CD player. As a result, in Examples 1 and 2, compared to the conventional example, the resolution in the low tone range was increased, and the information amount of the sound was increased, resulting in a well-balanced sound.

[0008]

As described in the above embodiment, the electrolytic capacitor of the present invention partially containing banana fiber has an improved resolution in a low frequency range, an increased amount of sound information, and a well-balanced sound. Is obtained, which can greatly contribute to the improvement of the sound quality of the audio equipment.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an electrolytic capacitor element according to an embodiment of the present invention.

FIG. 2 is a fragmentary front view of an electrolytic capacitor according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Anode foil 2 Cathode foil 3 Separator 4 Anode lead 5 Cathode lead 6 Capacitor element 7 Elastic sealing body 8 Metal case

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masahiko Ishida 4th floor of Nichicon Co., Ltd. F-term (reference) 4F, Nichicon Co., Ltd., 3rd floor of Uehara Building, 191 Nakabori-cho, Ichi-dori, Karasuma, Higashi-iri, Nakagyo-ku, Kyoto-shi, Kyoto 4L055 GA01 GA47 GA50

Claims (1)

[Claims] 1. An electrolytic capacitor comprising a capacitor element wound or laminated between opposing electrode foils with a separator interposed therebetween, the electrolyte being impregnated with an electrolytic solution, wherein the separator is a mixed paper containing banana fibers. Characteristic electrolytic capacitor.