JPS5973821U - electronic volume device - Google Patents

electronic volume device

Info

Publication number
JPS5973821U
JPS5973821U JP16903582U JP16903582U JPS5973821U JP S5973821 U JPS5973821 U JP S5973821U JP 16903582 U JP16903582 U JP 16903582U JP 16903582 U JP16903582 U JP 16903582U JP S5973821 U JPS5973821 U JP S5973821U
Authority
JP
Japan
Prior art keywords
electronic volume
volume device
resistor
npn
collector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP16903582U
Other languages
Japanese (ja)
Other versions
JPH0221781Y2 (en
Inventor
鈴木　茂紀
Original Assignee
日本コロムビア株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本コロムビア株式会社 filed Critical 日本コロムビア株式会社
Priority to JP16903582U priority Critical patent/JPS5973821U/en
Publication of JPS5973821U publication Critical patent/JPS5973821U/en
Application granted granted Critical
Publication of JPH0221781Y2 publication Critical patent/JPH0221781Y2/ja
Granted legal-status Critical Current

Links

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の電子ボリュームの回路図、第２図は本考
案の一実施例の回路図、第３図は第２図に用いるＶＣＡ
の信号減衰度対制御電圧特性例を示す図である。 １は入力端子、２２はＶＣＡ、　４は出力端子、２４は
バッファアンプ、２６はコンデンサ、２７゜２８はスイ
ッチ、２９は電源、３０．　３１．　３８゜３９は抵抗
、３２．３３はトランジスタ、３４゜３５．３６．３７
はダイオードである。Figure 1 is a circuit diagram of a conventional electronic volume, Figure 2 is a circuit diagram of an embodiment of the present invention, and Figure 3 is a VCA used in Figure 2.
FIG. 3 is a diagram showing an example of signal attenuation versus control voltage characteristics. 1 is an input terminal, 22 is a VCA, 4 is an output terminal, 24 is a buffer amplifier, 26 is a capacitor, 27°28 is a switch, 29 is a power supply, 30. 31. 38°39 is a resistor, 32.33 is a transistor, 34°35.36.37
is a diode.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）エミッタに抵抗が接続されている第一の定電流回
路を構成しているＰＮＰ）ランジスタのコレクターと、
エミッタに抵抗が接続されている第二の定電流回路を構
成しているＮＰＮ　）ランジスタのコレクターが接続さ
れ、該接続点とアース間に充電用のコンデンサが接続さ
れ、該コンデンサの充電電圧によってＶＣＡを制御する
ことを特徴とした電子ボリューム装置。(1) A collector of a PNP transistor constituting a first constant current circuit whose emitter is connected to a resistor;
The collector of the NPN (NPN) transistor constituting the second constant current circuit whose emitter is connected to a resistor is connected, and a charging capacitor is connected between the connection point and ground, and the charging voltage of the capacitor causes the VCA An electronic volume device that controls. （２）該両トランジスタのエミッタに抵抗値が連動して
変化する可変抵抗器を接続したことを特徴−とする実用
新案登録請求の範囲第（１）項記載の電子ボリューム装
置。　　”(2) The electronic volume device according to claim 1, which is a registered utility model, characterized in that a variable resistor whose resistance value changes in conjunction with the emitters of both transistors is connected. ”
JP16903582U 1982-11-08 1982-11-08 electronic volume device Granted JPS5973821U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16903582U JPS5973821U (en) 1982-11-08 1982-11-08 electronic volume device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16903582U JPS5973821U (en) 1982-11-08 1982-11-08 electronic volume device

Publications (2)

Publication Number Publication Date
JPS5973821U true JPS5973821U (en) 1984-05-19
JPH0221781Y2 JPH0221781Y2 (en) 1990-06-12

Family

ID=30369382

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16903582U Granted JPS5973821U (en) 1982-11-08 1982-11-08 electronic volume device

Country Status (1)

Country Link
JP (1) JPS5973821U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6248733U (en) * 1985-09-06 1987-03-26

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501779A (en) * 1973-05-04 1975-01-09
JPS55155107U (en) * 1979-04-20 1980-11-08

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501779A (en) * 1973-05-04 1975-01-09
JPS55155107U (en) * 1979-04-20 1980-11-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6248733U (en) * 1985-09-06 1987-03-26

Also Published As

Publication number Publication date
JPH0221781Y2 (en) 1990-06-12

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