JPS621443U - - Google Patents
Info
- Publication number
- JPS621443U JPS621443U JP9242785U JP9242785U JPS621443U JP S621443 U JPS621443 U JP S621443U JP 9242785 U JP9242785 U JP 9242785U JP 9242785 U JP9242785 U JP 9242785U JP S621443 U JPS621443 U JP S621443U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- turned
- switch
- connection end
- tuner
- 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
- 230000035945 sensitivity Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Description
第１図は本考案による感度切換装置の一例を示
す接続図、第２図乃至第４図はそれぞれ、従来の
感度切換装置を示す接続図である。
２はチユーナ、７はアンテナ接続端、８は静電
破壊防止用ダイオード装置である。
FIG. 1 is a connection diagram showing an example of a sensitivity switching device according to the present invention, and FIGS. 2 to 4 are connection diagrams showing conventional sensitivity switching devices, respectively. 2 is a tuner, 7 is an antenna connection end, and 8 is a diode device for preventing electrostatic damage.
Claims (1)
ドが互に逆方向に接続されて構成されてなる静電
破壊防止用ダイオード装置を介して接地してなる
ラジオ受信機において、 上記アンテナ接続端を、スイツチ及び第１の抵
抗器よりなる直列回路を介して直流電源端子に接
続し、 上記スイツチのオンにより、オン状態となる上記
ダイオードに対して直列に第２の抵抗器を接続し
たことを特徴とするチユーナの感度切換装置。[Claims for Utility Model Registration] In a radio receiver in which the antenna connection end of a tuner is grounded via an electrostatic damage prevention diode device consisting of two diodes connected in opposite directions. , the antenna connection end is connected to a DC power supply terminal via a series circuit consisting of a switch and a first resistor, and a second resistor is connected in series with the diode which is turned on when the switch is turned on. A tuner sensitivity switching device characterized by connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9242785U JPS621443U (en) | 1985-06-19 | 1985-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9242785U JPS621443U (en) | 1985-06-19 | 1985-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS621443U true JPS621443U (en) | 1987-01-07 |
Family
ID=30649213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9242785U Pending JPS621443U (en) | 1985-06-19 | 1985-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS621443U (en) |
-
1985
- 1985-06-19 JP JP9242785U patent/JPS621443U/ja active Pending
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