JPH0390117U - - Google Patents
Info
- Publication number
- JPH0390117U JPH0390117U JP13422989U JP13422989U JPH0390117U JP H0390117 U JPH0390117 U JP H0390117U JP 13422989 U JP13422989 U JP 13422989U JP 13422989 U JP13422989 U JP 13422989U JP H0390117 U JPH0390117 U JP H0390117U
- Authority
- JP
- Japan
- Prior art keywords
- low
- pass filter
- integrated circuit
- output signal
- frequency
- 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 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Landscapes
- Amplifiers (AREA)
Description
第１図は本考案の増幅回路の原理を示すブロツ
ク系統図、第２図は本考案の増幅回路の具体的回
路の一実施例の回路図、第３図は本考案を説明す
るための特性図、第４図は従来の増幅回路のブロ
ツク系統図である。
１……オーデイオ信号が供給される入力端子、
２……電力増幅用集積回路（ＩＣ）、３……エリ
ミネータフイルタ、４……出力端子、５……低音
再生用スピーカ、Ｃ１，Ｃ２……コンデンサ、Ｌ
Ｐ１……第１ローパスフイルタ、ＬＰ２……第２
ローパスフイルタ、Ｒ１，Ｒ２……抵抗。
Figure 1 is a block system diagram showing the principle of the amplifier circuit of the present invention, Figure 2 is a circuit diagram of one embodiment of the concrete circuit of the amplifier circuit of the present invention, and Figure 3 is a characteristic diagram for explaining the invention. FIG. 4 is a block system diagram of a conventional amplifier circuit. 1...Input terminal to which audio signals are supplied,
2... Integrated circuit (IC) for power amplification, 3... Eliminator filter, 4... Output terminal, 5... Speaker for bass reproduction, C1, C2... Capacitor, L
P1...first low pass filter, LP2...second
Low-pass filter, R1, R2...resistance.
Claims (1)
信号が供給されるカツトオフ周波数が略１．３×
Ｆの第１ローハスフイルタと、第１ローパスフイ
ルタの出力信号が供給される増幅用集積回路と、
この集積回路の出力信号の高域成分を除去するカ
ツトオフ周波数が略３×Ｆの第２ローパスフイル
タと、第２ローパスフイルタの出力信号を前記集
積回路に負帰還を掛ける中心周波数Ｆのエリミネ
ータフイルタとより構成されたことを特徴とする
増幅回路。 The cutoff frequency at which the signal you want to amplify by emphasizing the level at center frequency F is approximately 1.3×
an amplification integrated circuit to which an output signal of the first low-pass filter is supplied;
a second low-pass filter with a cutoff frequency of approximately 3×F that removes high-frequency components of the output signal of the integrated circuit; and an eliminator filter with a center frequency of F that applies negative feedback to the output signal of the second low-pass filter to the integrated circuit. An amplifier circuit comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13422989U JPH0390117U (en) | 1989-11-17 | 1989-11-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13422989U JPH0390117U (en) | 1989-11-17 | 1989-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0390117U true JPH0390117U (en) | 1991-09-13 |
Family
ID=31681580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13422989U Pending JPH0390117U (en) | 1989-11-17 | 1989-11-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0390117U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010021993A (en) * | 2008-06-11 | 2010-01-28 | Hitachi Kokusai Electric Inc | Video signal multiplex transmission device and image device using the same |
-
1989
- 1989-11-17 JP JP13422989U patent/JPH0390117U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010021993A (en) * | 2008-06-11 | 2010-01-28 | Hitachi Kokusai Electric Inc | Video signal multiplex transmission device and image device using the same |
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