JPS5888464U

JPS5888464U - portable radio

Info

Publication number: JPS5888464U
Application number: JP1981182230U
Authority: JP
Inventors: 沢　豊太郎; 稲葉　務
Original assignee: 株式会社東芝
Priority date: 1981-12-09
Filing date: 1981-12-09
Publication date: 1983-06-15

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

[Brief explanation of drawings]

第１図は従来の携帯用無線機の外観図、第２図、第３図
は従来の携帯用無線機の内部配線図の部分図、第４図は
本考案の一実施例の内部配線図の部分図である。 −１・・・・・・送受信機、２・・・・・・外部機器、
３・・・・・・制御回路、４・・・・・・接栓座、５・
・・・・・接栓、４Ａ〜４Ｅ・・・・・・端子、５Ａ〜
５Ｅ・・・・・・端子、１１・・・・・・受話増幅器、
１２・・・・・・送話増幅器、１５・・・・・・内蔵ス
ピー゛力・マイク、１７．１８・・・・・・インピーダ
ンス素子、１９・・・・・・内蔵ブレストーク・スイッ
チ、２５・・・・・・外部スピーカ・マイク、２８・・
・・・・外部ブレストーク・スイッチ。Figure 1 is an external view of a conventional portable radio, Figures 2 and 3 are partial diagrams of the internal wiring diagram of a conventional portable radio, and Figure 4 is an internal wiring diagram of an embodiment of the present invention. FIG. -1... Transmitter/receiver, 2... External device,
3... Control circuit, 4... Junction seat, 5...
...Connection, 4A~4E...Terminal, 5A~
5E...terminal, 11...reception amplifier,
12... Transmitter amplifier, 15... Built-in speaker/microphone, 17.18... Impedance element, 19... Built-in breath talk switch, 25...External speaker/mic, 28...
...External breath talk switch.

Claims

[Scope of utility model registration request]

(1) A portable radio device that can connect the connector of an external device, which has an external speaker and microphone that can be used for both sending and receiving, to the connector of the transmitter and receiver, which has a built-in speaker and microphone that can be used for both sending and receiving. In the above, the stopper seat and the stopcock are respectively provided with a first terminal, a second terminal, a third terminal, and a fourth terminal corresponding to each other, and the external device has one end connected to the first terminal of the stopcock; The other end of the external speaker/microphone, the other end of which is connected to the third terminal of the connector, is connected to the second terminal of the connector.
A switch is provided on either the terminal or the fourth terminal to switch the connection according to the transmitting/receiving mode, and the transmitter/receiver is equipped with the built-in speaker/microphone, one end of which is connected to the first terminal of the connector seat and the reference potential point. a receiver amplifier whose output end is connected to the end and the second terminal of the plug seat; and a third terminal of the plug seat.
a transmitting amplifier whose input end is connected to a terminal; first and second impedance elements connected in series between the input terminal of the transmitting amplifier and the output terminal of the receiving amplifier; and the connecting plug. A control circuit is provided to operate either the transmitting system or the receiving system according to the transmitting/receiving mode connected to the fourth terminal of the socket, and the transmitter/receiver and the external device are connected to the socket and the connection. A portable radio device characterized in that a means is provided for connecting a connection point of the first and second impedance elements to a reference potential point when a plug is connected.

(2) The means for connecting the connection point to the reference potential point is a connection line that connects the reference potential point and the first terminal of the junction seat, and a connection line that connects the connection point and the fifth terminal of the junction seat. , and a connection line connecting between the fifth terminal of the connector corresponding to the fifth terminal of the connector seat and the first terminal of the connector. Portable radio as described.