JPS6234891U - - Google Patents
Info
- Publication number
- JPS6234891U JPS6234891U JP7782785U JP7782785U JPS6234891U JP S6234891 U JPS6234891 U JP S6234891U JP 7782785 U JP7782785 U JP 7782785U JP 7782785 U JP7782785 U JP 7782785U JP S6234891 U JPS6234891 U JP S6234891U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- operational amplifier
- microphone
- amplifier
- 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 2
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案のインターホン装置の一実施例
を示す電気回路図、第２図はスピーカを取付ける
筐体によつて変わる一例を示す周波数特性図であ
る。
３……マイク、４……マイク増巾器、１２……
演算増巾器、８，９……抵抗、１０……コンデン
サ。
FIG. 1 is an electric circuit diagram showing an embodiment of the intercom device of the present invention, and FIG. 2 is a frequency characteristic diagram showing an example of changes depending on the housing in which the speaker is installed. 3...Microphone, 4...Mic amplifier, 12...
Arithmetic amplifier, 8, 9...Resistor, 10...Capacitor.
Claims (1)
して増巾する演算増巾器と、その演算増巾器の増
巾度を決定する抵抗とそれに並列もしくは直列に
接続するコンデンサを備えたことを特徴とするイ
ンターホン装置。 Equipped with an operational amplifier that amplifies the electrical signal of the sound from the microphone via the microphone amplifier, a resistor that determines the degree of amplification of the operational amplifier, and a capacitor that is connected in parallel or series with the resistor. An intercom device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7782785U JPS6234891U (en) | 1985-05-24 | 1985-05-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7782785U JPS6234891U (en) | 1985-05-24 | 1985-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6234891U true JPS6234891U (en) | 1987-02-28 |
Family
ID=30926199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7782785U Pending JPS6234891U (en) | 1985-05-24 | 1985-05-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6234891U (en) |
-
1985
- 1985-05-24 JP JP7782785U patent/JPS6234891U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS60144377U (en) | Sensory sound device | |
| JPS6142690U (en) | Voice or breath paging device | |
| JPS6440992U (en) | ||
| JPS61180836U (en) | ||
| JPS63151336U (en) | ||
| JPS62203537U (en) | ||
| JPS5936309U (en) | Stethoscope | |
| JPH0328896U (en) | ||
| JPS6385988U (en) | ||
| JPH0444793U (en) | ||
| JPS5999838U (en) | alarm | |
| JPS6226969U (en) | ||
| JPH0457994U (en) | ||
| JPH01107936U (en) | ||
| JPS621493U (en) | ||
| JPS6114524U (en) | Vehicle audio equipment | |
| JPS63147017U (en) | ||
| JPH0251498U (en) | ||
| JPS6429998U (en) | ||
| JPH03107816U (en) | ||
| JPS6264018U (en) | ||
| JPH0485998U (en) | ||
| JPH03121559U (en) | ||
| JPH0390510U (en) | ||
| JPH02108425U (en) |