JPH0246433U - - Google Patents
Info
- Publication number
- JPH0246433U JPH0246433U JP12515288U JP12515288U JPH0246433U JP H0246433 U JPH0246433 U JP H0246433U JP 12515288 U JP12515288 U JP 12515288U JP 12515288 U JP12515288 U JP 12515288U JP H0246433 U JPH0246433 U JP H0246433U
- Authority
- JP
- Japan
- Prior art keywords
- operational amplifier
- input terminal
- inverting input
- output signal
- capacitor
- 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
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Networks Using Active Elements (AREA)
Description
第１図は本考案のローパスフイルタの一実施例
を示す回路図、第２図は従来のローパスフイルタ
の一例を示した回路図である。
１，２…オペアンプ、Ｃ１，Ｃ２…コンデンサ
、Ｒ１，Ｒ２…分圧抵抗。
FIG. 1 is a circuit diagram showing an embodiment of the low-pass filter of the present invention, and FIG. 2 is a circuit diagram showing an example of a conventional low-pass filter. 1, 2...Operation amplifier, C1 , C2 ...Capacitor, R1 , R2 ...Voltage dividing resistor.
Claims (1)
ペアンプと、この第１のオペアンプの出力信号を
非反転入力端子に入力する第２のオペアンプと、
この第２のオペアンプの出力信号を前記第１のオ
ペアンプの反転入力端子に直接フイードバツクす
る回路と、前記第２のオペアンプの出力信号をこ
のアンプの反転入力端子に分圧してフイードバツ
クす抵抗Ｒ１と抵抗Ｒ２の直列回路から成る分圧
回路と、前記第１のオペアンプの出力側に接続さ
れるコンデンサＣ１と、前記第２のオペアンプの
出力側に接続されるコンデンサＣ２とを具備して
成ることを特徴とするローパスフイルタ。 a first operational amplifier that inputs an input signal to a non-inverting input terminal; a second operational amplifier that inputs an output signal of the first operational amplifier to a non-inverting input terminal;
a circuit that directly feeds back the output signal of the second operational amplifier to the inverting input terminal of the first operational amplifier; and a resistor R1 that divides and feeds back the output signal of the second operational amplifier to the inverting input terminal of the amplifier. A voltage dividing circuit consisting of a series circuit of resistors R2 , a capacitor C1 connected to the output side of the first operational amplifier, and a capacitor C2 connected to the output side of the second operational amplifier. A low pass filter characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12515288U JPH0246433U (en) | 1988-09-27 | 1988-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12515288U JPH0246433U (en) | 1988-09-27 | 1988-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0246433U true JPH0246433U (en) | 1990-03-29 |
Family
ID=31375504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12515288U Pending JPH0246433U (en) | 1988-09-27 | 1988-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246433U (en) |
-
1988
- 1988-09-27 JP JP12515288U patent/JPH0246433U/ja active Pending