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 |
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