JPS58182516U

JPS58182516U - Sound quality adjustment circuit

Info

Publication number: JPS58182516U
Application number: JP7918282U
Authority: JP
Inventors: 健司吉田
Original assignee: 日本コロムビア株式会社
Priority date: 1982-05-28
Filing date: 1982-05-28
Publication date: 1983-12-05

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の音質調整回路の一例を示す回路図、第２
図は本考案による音質調整回路の一実施例を示す回路図
、第３図は本考案において用いる抵抗可変手段の一例を
示す回路図、第４図は本考案による音質調整回路の特性
の一例を示す線図、第５図及び第６図はそれぞれ本考案
による音質調整回路の他の一実施例を示す回路図である
。図中、１６及び１７はコンデンサ、２１及び２２はイン
ダクタ、１８及び１９は可変抵抗器である。 −第２図第５図Figure 1 is a circuit diagram showing an example of a conventional sound quality adjustment circuit;
Fig. 3 is a circuit diagram showing an example of the sound quality adjustment circuit according to the present invention, Fig. 3 is a circuit diagram showing an example of the resistance variable means used in the invention, and Fig. 4 shows an example of the characteristics of the sound quality adjustment circuit according to the invention. The diagrams shown in FIGS. 5 and 6 are circuit diagrams showing other embodiments of the sound quality adjustment circuit according to the present invention. In the figure, 16 and 17 are capacitors, 21 and 22 are inductors, and 18 and 19 are variable resistors. -Figure 2Figure 5

Claims

[Scope of utility model registration request]

Applying an input signal to the gate or base of the transistor,
The sources or emitters of the transistors are the first and second transistors.
A first series circuit consisting of a first resistance variable means and a first impedance is connected in parallel to the first resistor, and the drain or collector of the transistor is grounded through a series circuit of resistors. 3rd and 4th which serve as the load of the side circuit
A second series circuit consisting of a second variable resistance means and a second impedance is connected in parallel to one of the resistors in the series circuit of resistors, and the first and second variable resistance means are connected in parallel to one of the resistors. consisting of a body part and a non-conductor part, and the first and second variable resistance means are variable in conjunction with each other,
When the slider or switch of one variable resistance means is located on the resistor part, the slider or switch of the other variable resistance means is located on the non-conductor part, and the slider or switch of the other variable resistance means is located on the non-conductor part. Alternatively, a sound quality adjustment circuit characterized in that the switching devices are both located in the non-conducting portion in the neutral position.