JPS62198712U - - Google Patents
Info
- Publication number
- JPS62198712U JPS62198712U JP8765386U JP8765386U JPS62198712U JP S62198712 U JPS62198712 U JP S62198712U JP 8765386 U JP8765386 U JP 8765386U JP 8765386 U JP8765386 U JP 8765386U JP S62198712 U JPS62198712 U JP S62198712U
- Authority
- JP
- Japan
- Prior art keywords
- relay
- amplifier
- feedback resistor
- output
- fed back
- 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
Links
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Amplifiers (AREA)
Description
第１図は本考案の負帰還回路の構成を示す図、
第２図は同、第１のリレーおよび第２のリレーが
ＯＮのときの等価回路、第３図は同、保護／時定
数回路の構成を示す図、第４図は同、保護／時定
数回路の各部の信号波形を示す図、第５および第
６図は同、他の実施例の構成を示す図、第７図は
従来の負帰還回路の構成を示す図、第８図は同、
リレーがＯＮのときの等価回路、第９図は同、従
来の負帰還回路の構成を示す図、第１０図は同、
リレーがＯＮのときの等価回路である。
１……差動型電力増幅器、１ａ……同、非反転
入力端子、１ｂ……同、反転入力端子、１ｃ……
同、出力、３……抵抗、４……負荷、９……第１
の帰還抵抗、１０……第２の帰還抵抗、１１……
第１のリレー、１２……第２のリレー、１３……
保護／時定数回路。
FIG. 1 is a diagram showing the configuration of the negative feedback circuit of the present invention,
Figure 2 is the equivalent circuit when the first and second relays are ON, Figure 3 is the same, and shows the configuration of the protection/time constant circuit, Figure 4 is the same, protection/time constant Figures 5 and 6 are diagrams showing the configuration of other embodiments; Figure 7 is a diagram showing the configuration of a conventional negative feedback circuit; Figure 8 is the diagram showing the configuration of a conventional negative feedback circuit;
The equivalent circuit when the relay is ON, Figure 9 is the same, the diagram showing the configuration of a conventional negative feedback circuit, Figure 10 is the same,
This is an equivalent circuit when the relay is ON. 1...Differential power amplifier, 1a... Same, non-inverting input terminal, 1b... Same, inverting input terminal, 1c...
Same, output, 3...resistance, 4...load, 9...first
feedback resistance, 10... second feedback resistance, 11...
First relay, 12...Second relay, 13...
Protection/time constant circuit.
Claims (1)
抵抗９、第２の帰還抵抗１０を介して上記増幅器
１の入力側に負帰還し、当該増幅器１の出力１ｃ
を第１のリレー１１を介して負荷４に接続すると
ともに、当該増幅器１の出力１ｃを第２のリレー
１２を介して上記第１の帰還抵抗９と第２の帰還
抵抗１０の接続中点に接続し、かつ、上記第１の
リレー１１は負荷電流用のパワー接点を具備し、
上記第２のリレー１２は小信号用の高信頼度リレ
ー接点を具備するリレーであつて、当該第２のリ
レー１２は上記第１のリレー１１がＯＮ動作する
と同時または直後にＯＦＦからＯＮへ状態が変化
し、上記第１のリレー１１がＯＦＦ動作する直前
にＯＮからＯＦＦへ状態が変化するように制御さ
れることを特徴とする負帰還回路。 The output 1c of the amplifier 1 is negatively fed back to the input side of the amplifier 1 through a first feedback resistor 9 and a second feedback resistor 10 connected in series, and the output 1c of the amplifier 1 is negatively fed back to the input side of the amplifier 1.
is connected to the load 4 via the first relay 11, and the output 1c of the amplifier 1 is connected to the midpoint between the first feedback resistor 9 and the second feedback resistor 10 via the second relay 12. connected, and the first relay 11 is provided with a power contact for the load current,
The second relay 12 is a relay equipped with a high-reliability relay contact for small signals, and the second relay 12 changes from OFF to ON at the same time or immediately after the first relay 11 turns ON. A negative feedback circuit characterized in that the negative feedback circuit is controlled so that the state changes from ON to OFF immediately before the first relay 11 is turned OFF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986087653U JPH0735446Y2 (en) | 1986-06-09 | 1986-06-09 | Negative feedback circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986087653U JPH0735446Y2 (en) | 1986-06-09 | 1986-06-09 | Negative feedback circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62198712U true JPS62198712U (en) | 1987-12-17 |
| JPH0735446Y2 JPH0735446Y2 (en) | 1995-08-09 |
Family
ID=30945060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986087653U Expired - Lifetime JPH0735446Y2 (en) | 1986-06-09 | 1986-06-09 | Negative feedback circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735446Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014209700A (en) * | 2013-03-22 | 2014-11-06 | 株式会社東芝 | Light-receiving circuit and optical coupling device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55152712U (en) * | 1979-04-19 | 1980-11-04 |
-
1986
- 1986-06-09 JP JP1986087653U patent/JPH0735446Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55152712U (en) * | 1979-04-19 | 1980-11-04 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014209700A (en) * | 2013-03-22 | 2014-11-06 | 株式会社東芝 | Light-receiving circuit and optical coupling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0735446Y2 (en) | 1995-08-09 |