JPH0181031U - - Google Patents
Info
- Publication number
- JPH0181031U JPH0181031U JP1987176792U JP17679287U JPH0181031U JP H0181031 U JPH0181031 U JP H0181031U JP 1987176792 U JP1987176792 U JP 1987176792U JP 17679287 U JP17679287 U JP 17679287U JP H0181031 U JPH0181031 U JP H0181031U
- Authority
- JP
- Japan
- Prior art keywords
- filter section
- active filter
- attenuation
- input signal
- circuit disposed
- 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
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Networks Using Active Elements (AREA)
Description
図は、本考案の一実施例を示す回路図である。
２…減衰回路、３…第１差動増幅回路、９…第
２差動増幅回路、１３…コンデンサ、１６…増幅
回路。
The figure is a circuit diagram showing an embodiment of the present invention. 2... Attenuation circuit, 3 ... First differential amplifier circuit, 9 ... Second differential amplifier circuit, 13... Capacitor, 16... Amplifying circuit.
Claims (1)
周波数が決まるアクテイブフイルタ部と、該アク
テイブフイルタ部の前段に配置され、前記アクテ
イブフイルタ部の入力信号を所定量減衰させる減
衰回路と、前記アクテイブフイルタ部の後段に配
置され、前記入力信号の減衰を補償する増幅回路
とから成るアクテイブフイルタ。 an active filter section whose cutoff frequency is determined by the mutual conductance of the transistor; an attenuation circuit disposed before the active filter section to attenuate the input signal of the active filter section by a predetermined amount; and an attenuation circuit disposed after the active filter section; and an amplifier circuit that compensates for attenuation of the input signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176792U JPH0514577Y2 (en) | 1987-11-19 | 1987-11-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176792U JPH0514577Y2 (en) | 1987-11-19 | 1987-11-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0181031U true JPH0181031U (en) | 1989-05-31 |
| JPH0514577Y2 JPH0514577Y2 (en) | 1993-04-19 |
Family
ID=31468495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987176792U Expired - Lifetime JPH0514577Y2 (en) | 1987-11-19 | 1987-11-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0514577Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5811125B2 (en) * | 1980-07-10 | 1983-03-01 | ソニー株式会社 | filter device |
-
1987
- 1987-11-19 JP JP1987176792U patent/JPH0514577Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0514577Y2 (en) | 1993-04-19 |