JPH0373029U - - Google Patents
Info
- Publication number
- JPH0373029U JPH0373029U JP13256589U JP13256589U JPH0373029U JP H0373029 U JPH0373029 U JP H0373029U JP 13256589 U JP13256589 U JP 13256589U JP 13256589 U JP13256589 U JP 13256589U JP H0373029 U JPH0373029 U JP H0373029U
- Authority
- JP
- Japan
- Prior art keywords
- operational amplifier
- inverting input
- switch means
- electronic volume
- volume device
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図はこの考案に係る電子ボリユーム装置の
実施例を示す回路図、第２図は従来の実施例を示
す回路図である。
主な符合の説明、１……演算増幅器、２，３，
４，５，６，７……抵抗器、Ｓ１，Ｓ２，Ｓ３，
Ｓ４，Ｓ５，Ｓ６……アナログスイツチ。
FIG. 1 is a circuit diagram showing an embodiment of an electronic volume device according to this invention, and FIG. 2 is a circuit diagram showing a conventional embodiment. Explanation of main symbols, 1... operational amplifier, 2, 3,
4, 5, 6, 7...Resistor, S 1 , S 2 , S 3 ,
S4 , S5 , S6 ...Analog switches.
Claims (1)
信号源との間に設けられ、且つ、直列に接続した
複数の抵抗器と、前記それぞれの抵抗器が接続す
る接続線路と演算増幅器の反転入力端子との間に
設けた複数のスイツチ手段とで構成したことを特
徴とする電子ボリユーム装置。 ２ 演算増幅器の反転入力端子と出力端子との間
にスイツチ手段を設けたことを特徴とする請求項
１記載の電子ボリユーム装置。[Claims for Utility Model Registration] 1. An operational amplifier, a plurality of resistors connected in series between the output terminal of the operational amplifier and a signal source, and connections between the respective resistors. An electronic volume device comprising a plurality of switch means provided between a line and an inverting input terminal of an operational amplifier. 2. The electronic volume device according to claim 1, further comprising a switch means between the inverting input terminal and the output terminal of the operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13256589U JPH0373029U (en) | 1989-11-16 | 1989-11-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13256589U JPH0373029U (en) | 1989-11-16 | 1989-11-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0373029U true JPH0373029U (en) | 1991-07-23 |
Family
ID=31680020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13256589U Pending JPH0373029U (en) | 1989-11-16 | 1989-11-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0373029U (en) |
-
1989
- 1989-11-16 JP JP13256589U patent/JPH0373029U/ja active Pending
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