JPS63149623U - - Google Patents
Info
- Publication number
- JPS63149623U JPS63149623U JP4155987U JP4155987U JPS63149623U JP S63149623 U JPS63149623 U JP S63149623U JP 4155987 U JP4155987 U JP 4155987U JP 4155987 U JP4155987 U JP 4155987U JP S63149623 U JPS63149623 U JP S63149623U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- amplifying
- amplifying means
- attenuates
- 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
- 238000010586 diagram Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 1
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は本考案の他の実施例を示す回路図、第３図は
ＴＯＮＥ回路の一実施例を示す回路図、第４図は
減衰回路の一実施例を示す回路図、第５図は従来
の構成による減衰動作を示すグラフ図、第６図は
本考案の構成による減衰動作を示すグラフ図であ
る。
１：信号入力端子、２：前置増幅回路、３：Ｔ
ＯＮＥ回路、４：主増幅回路、５：スピーカ、６
：整流回路、７：時定数回路、８：スイツチング
トランジスタ、９：減衰回路、１０：切換回路。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
3 is a circuit diagram showing an embodiment of the TONE circuit, FIG. 4 is a circuit diagram showing an embodiment of the attenuation circuit, and FIG. 5 is a circuit diagram showing an embodiment of the TONE circuit. FIG. 6 is a graph showing the damping operation according to the structure of the present invention. 1: Signal input terminal, 2: Preamplifier circuit, 3: T
ONE circuit, 4: Main amplifier circuit, 5: Speaker, 6
: rectifier circuit, 7: time constant circuit, 8: switching transistor, 9: attenuation circuit, 10: switching circuit.
Claims (1)
と作動して該増幅手段の信号を周波数に応じた割
合で減衰する減衰手段とを有することを特徴とす
る信号レベル制御装置。[Claims for Utility Model Registration] Amplifying means for amplifying an input signal; and attenuating means that operates when the output signal of the amplifying means exceeds a predetermined level and attenuates the signal of the amplifying means at a rate corresponding to the frequency. A signal level control device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4155987U JPS63149623U (en) | 1987-03-20 | 1987-03-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4155987U JPS63149623U (en) | 1987-03-20 | 1987-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63149623U true JPS63149623U (en) | 1988-10-03 |
Family
ID=30856672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4155987U Pending JPS63149623U (en) | 1987-03-20 | 1987-03-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63149623U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007027821A (en) * | 2005-07-12 | 2007-02-01 | Alpine Electronics Inc | Audio apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50104847A (en) * | 1974-01-19 | 1975-08-19 |
-
1987
- 1987-03-20 JP JP4155987U patent/JPS63149623U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50104847A (en) * | 1974-01-19 | 1975-08-19 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007027821A (en) * | 2005-07-12 | 2007-02-01 | Alpine Electronics Inc | Audio apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS63149623U (en) | ||
| JPS60144377U (en) | Sensory sound device | |
| JPS63149622U (en) | ||
| JPS6397992U (en) | ||
| JPS58104080U (en) | Amplifier for pre-talk calls | |
| JPS5857110U (en) | Low frequency characteristic improvement circuit | |
| JPS615014U (en) | Operation level optimization control circuit | |
| JPS6193100U (en) | ||
| JPS5627557A (en) | Side-tone preventing circuit | |
| JPS6037946U (en) | Howling prevention device for wireless microphone receiver | |
| JPS58125413U (en) | Sound quality control circuit | |
| JPS63192719U (en) | ||
| JPH0359722U (en) | ||
| JPS63174713U (en) | ||
| JPS5472611A (en) | Squelch control system | |
| JPH01126622U (en) | ||
| JPS6271697U (en) | ||
| JPS60124127U (en) | mixing equipment | |
| JPS60124188U (en) | Howling prevention device | |
| JPS60119149U (en) | limiter circuit | |
| JPS593685U (en) | Microphone sensitivity switching circuit | |
| JPS63138719U (en) | ||
| JPS6454449U (en) | ||
| JPS61109223U (en) | ||
| JPS59180552U (en) | Simultaneous call type handset/receiver |