JPS59189367U - hands free circuit - Google Patents
hands free circuitInfo
- Publication number
- JPS59189367U JPS59189367U JP8238383U JP8238383U JPS59189367U JP S59189367 U JPS59189367 U JP S59189367U JP 8238383 U JP8238383 U JP 8238383U JP 8238383 U JP8238383 U JP 8238383U JP S59189367 U JPS59189367 U JP S59189367U
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- audio signal
- hands free
- free circuit
- circuit
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図は本考案の一実施例の構成を示すブロック図である。
１・・・・・・マイクロホン、３・・・・・・増幅器、
４・・・・・・平衡回路網、６・・・・・・スピーカ、
７・・・・・・ダイオードの並列回路、Ｒ□・・・・・
・帰還抵抗、Ｄ□、Ｄ２・・・・・・ダイオード。The figure is a block diagram showing the configuration of an embodiment of the present invention. 1...Microphone, 3...Amplifier,
4...Balanced circuit network, 6...Speaker,
7...Parallel circuit of diode, R□...
・Feedback resistor, D□, D2...diode.
Claims (1)
音声信号を増幅する帰還抵抗を有する増幅器と、この増
幅器からの音声信号を通話路に中継するとともに通話路
からの音声信号をスピーカに中継する平衡回路網とを備
えたハンドフリー回路において、上記増幅器の帰還抵抗
に並列に、相−互に双方向接続された２個のダイオード
の並列回路を接続したことを特徴とするハンドフリー回
路。A microphone, a speaker, an amplifier having a feedback resistor that amplifies the audio signal input to the microphone, and a balanced circuit network that relays the audio signal from the amplifier to a communication path and relays the audio signal from the communication path to the speaker. 1. A hands-free circuit comprising: a parallel circuit of two diodes bidirectionally connected to each other in parallel with the feedback resistor of the amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8238383U JPS59189367U (en) | 1983-05-31 | 1983-05-31 | hands free circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8238383U JPS59189367U (en) | 1983-05-31 | 1983-05-31 | hands free circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59189367U true JPS59189367U (en) | 1984-12-15 |
Family
ID=30212334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8238383U Pending JPS59189367U (en) | 1983-05-31 | 1983-05-31 | hands free circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59189367U (en) |
-
1983
- 1983-05-31 JP JP8238383U patent/JPS59189367U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5899991U (en) | speaker system | |
| JPS59189367U (en) | hands free circuit | |
| JPS58149848U (en) | intercom device | |
| JPS5843032U (en) | filter circuit | |
| JPS5840968U (en) | Communication device using listening device | |
| JPS59120479U (en) | Level meter circuit | |
| JPS60163850U (en) | Transmitting/receiving device | |
| JPS5865612U (en) | Composite audio equipment | |
| JPS5888476U (en) | On hold music sending circuit | |
| JPS6050524U (en) | General purpose amplifier | |
| JPS582719U (en) | microphone mixing circuit | |
| JPS58119284U (en) | speaker connection device | |
| JPS5854142U (en) | audio output device | |
| JPS59125192U (en) | speaker device | |
| JPS597500U (en) | audio processing circuit | |
| JPS6114521U (en) | audio signal mixing device | |
| JPS6019222U (en) | Amplifier with direct function switch | |
| JPS61166649U (en) | ||
| JPS6090919U (en) | NF type bass/treble control circuit | |
| JPS59152894U (en) | protection device | |
| JPS5960797U (en) | Audio equipment with dimmer | |
| JPS60170894U (en) | Alarm device in the basement | |
| JPS5936100U (en) | voice memo device | |
| JPS5978780U (en) | audio set | |
| JPS6035666U (en) | telephone call circuit |