JPS58121429U - filter circuit - Google Patents
filter circuitInfo
- Publication number
- JPS58121429U JPS58121429U JP1716282U JP1716282U JPS58121429U JP S58121429 U JPS58121429 U JP S58121429U JP 1716282 U JP1716282 U JP 1716282U JP 1716282 U JP1716282 U JP 1716282U JP S58121429 U JPS58121429 U JP S58121429U
- Authority
- JP
- Japan
- Prior art keywords
- filter circuit
- amplifier
- filter
- feedback input
- feedback
- 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
- 230000003321 amplification Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Networks Using Active Elements (AREA)
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
辷 第1図は従来のフィルタ回路の一例を示す回路
= 図、第2図は第1図の回路においてトランジスタ
=Tr2を除去して得られる従来のフィルタ回路を示す
回路図、第3図は本考案の一実施例を示す回路 。
1 図、である。。
符号説明、1.la、lb・・・・・・フィルタ回路、
2・・・・・・増幅器、RA、 RB・・曲帰還抵抗。Figure 1 is a circuit diagram showing an example of a conventional filter circuit, Figure 2 is a circuit diagram showing a conventional filter circuit obtained by removing transistor Tr2 from the circuit in Figure 1, and Figure 3 is a circuit diagram showing an example of a conventional filter circuit. A circuit showing an embodiment of the invention. Figure 1. . Code explanation, 1. la, lb...filter circuit,
2... Amplifier, RA, RB... Curved feedback resistance.
Claims (1)
共に、内部の主信号路にフィルタアンプを含まないフィ
ルタ回路において、前記帰還入力にインピーダンス変換
回路を挿入することにより、−前記増幅器の利得を決定
する帰還抵抗の影響を杖゛除したことを特徴とするフィ
ルタ回路。, by splitting the feedback input from the output side amplifier having an amplification degree, and inserting an impedance conversion circuit into the feedback input in a filter circuit that does not include a filter amplifier in the internal main signal path, - determine the gain of the amplifier. A filter circuit characterized in that the influence of a feedback resistor is completely eliminated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1716282U JPS58121429U (en) | 1982-02-12 | 1982-02-12 | filter circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1716282U JPS58121429U (en) | 1982-02-12 | 1982-02-12 | filter circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58121429U true JPS58121429U (en) | 1983-08-18 |
Family
ID=30029492
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1716282U Pending JPS58121429U (en) | 1982-02-12 | 1982-02-12 | filter circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58121429U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7928815B2 (en) | 2007-03-20 | 2011-04-19 | Fujitsu Limited | Amplifier |
-
1982
- 1982-02-12 JP JP1716282U patent/JPS58121429U/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7928815B2 (en) | 2007-03-20 | 2011-04-19 | Fujitsu Limited | Amplifier |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS58121429U (en) | filter circuit | |
JPS5861522U (en) | amplifier circuit | |
JPS5999523U (en) | Phono input circuit | |
JPS5988917U (en) | Connection circuit between amplifiers | |
JPS6072018U (en) | Differential amplifier negative feedback circuit | |
JPS5996916U (en) | variable gain amplifier circuit | |
JPS59152809U (en) | Muting circuit | |
JPS618313U (en) | constant voltage circuit | |
JPS59169188U (en) | microphone amplifier circuit | |
JPS58125408U (en) | Amplifier protection circuit | |
JPS5882021U (en) | feedback amplifier circuit | |
JPS6061818U (en) | amplifier circuit | |
JPS5866713U (en) | amplifier | |
JPS58111511U (en) | Muting circuit | |
JPS58162031U (en) | vibration detection device | |
JPS59195818U (en) | temperature compensation circuit | |
JPS58158519U (en) | Operational amplifier operating circuit | |
JPS6090919U (en) | NF type bass/treble control circuit | |
JPS58533U (en) | Transformer coupled receiver circuit | |
JPS5988923U (en) | differential amplifier | |
JPS5826211U (en) | amplifier circuit | |
JPS6061822U (en) | Width increase circuit | |
JPS5952716U (en) | Amplifier gain adjustment circuit | |
JPS63174712U (en) | ||
JPS586494U (en) | output synthesizer |