JPH04130427U - Electrolytic capacitor for acoustics - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to provide an acoustic electrolytic capacitor with excellent sound quality characteristics. [Structure] The materials of the external lead-out terminal on the anode side and the external lead-out terminal on the cathode side are different.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an acoustic electrolytic capacitor.

0002

[Conventional technology]

In audio equipment, J as shown in Figure 1 is used as a coupling capacitor. IS04 type electrolytic capacitors are widely used. This electrolytic capacitor 1 is A capacitor element 3 is placed inside a cylindrical metal case 2 made of aluminum with one end closed. The opening of the metal case 2 is sealed with a sealing body 4. con The capacitor element 3 consists of an anode foil and a cathode foil made of aluminum foil with a separator interposed between them. It is made by winding it and impregnating it with electrolyte, and the anode foil and cathode foil each have a tab terminal 5. is connected, and this tab terminal 5 penetrates the sealing body 4 and is drawn out to the outside.

0003 The tab terminal 5 is an aluminum round bar with a flat portion 6 as shown in Figure 2. It is made by welding an external lead-out terminal 8 to 7, and an example of the external lead-out terminal 8 is For example, steel-core copper wire is made by plating steel wire with copper and then plating it with tin or solder. CP wire and oxygen-free copper wire (OFC wire) are used.

0004

[Problem that the idea aims to solve]

Electrolytic capacitors used for acoustics are known to provide particularly excellent playback quality. However, the electrolytic capacitors used in traditional acoustic applications are It could not be said that excellent playback quality was obtained.

[0005] The purpose of this invention is to provide an acoustic electrolytic capacitor with excellent sound quality characteristics. It is said that

[0006]

[Means to solve the problem]

The inventors discovered that one of the causes of deterioration in sound quality was the external lead-out terminal. The playback quality has been improved by improving the external output terminal. vinegar In other words, the present invention provides an electrolytic capacitor with an external lead-out terminal on the anode side and a terminal on the cathode side. The external lead terminals are made of different materials. Also, either the external lead terminal on the anode side or the external lead terminal on the cathode side One wire was made of a CP wire, and the other was made of an oxygen-free copper wire (OFC wire).

[0007]

[Effect]

The material of the external lead-out terminal on the anode side and the external lead-out terminal on the cathode side are different. Better sound quality characteristics can be obtained.

[0008]

【Example】

JIS04 type electrolytic device with the structure shown in Figure 1, with external lead-out terminals as shown below. A capacitor, rated 50V 47μF, diameter 6.3mm, length 11mm was used in Example 1 and and 2. You can also use external lead-out terminals with the same structure, size, and ratings. Electrolytic capacitors were prepared as Comparative Examples 1 and 2 as described below. Anode side lead-out terminal Cathode side lead-out terminal Example 1 CP wire Oxygen-free copper wire Example 2 Oxygen-free copper wire CP wire Comparative example 1 CP line CP line Comparative example 2 Oxygen-free copper wire Oxygen-free copper wire

[0009] I installed these as coupling capacitors in the integrated amplifier and listened to them. . The sound quality is divided into the following items: low-frequency volume, high-frequency extension, information content, and frequency balance. A comprehensive evaluation was made based on these judgments. The results are shown in Table 1. From Table 1, the present invention It can be seen that Examples 1 and 2 have better overall evaluations than Comparative Examples 1 and 2. Ru.

[Table 1]

0010 In the example, a JIS04 type electrolytic capacitor was explained, but the present invention is a JIS69 type external lead-out terminal (lug terminal) or other type of audio power terminal. It can also be applied to the external lead-out terminal of a capacitor.

[0011]

[Effect of the idea]

External lead-out terminal on the anode side and external lead-out end on the cathode side of an acoustic electrolytic capacitor Excellent sound quality characteristics were obtained by using different materials.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a JIS04 type electrolytic capacitor.

FIG. 2 is a diagram showing a tab terminal.

[Explanation of symbols]

1 Electrolytic capacitor 2 Metal case 3 Capacitor element 4 Sealing body 5 Tab terminal 6 (flat plate-like) part 7 Round bar 8 External extraction terminal

Claims (2)

[Scope of utility model registration request] 1. An acoustic electrolytic capacitor, wherein the external lead terminal on the anode side and the external lead terminal on the cathode side are made of different materials. 2. The acoustic electrolytic capacitor according to claim 1, wherein either one of the anode-side external lead-out terminal and the cathode-side external lead-out terminal is made of a steel-core copper wire, and the other is made of an oxygen-free copper wire.