JPS617141U - antenna input circuit - Google Patents
antenna input circuitInfo
- Publication number
- JPS617141U JPS617141U JP9023984U JP9023984U JPS617141U JP S617141 U JPS617141 U JP S617141U JP 9023984 U JP9023984 U JP 9023984U JP 9023984 U JP9023984 U JP 9023984U JP S617141 U JPS617141 U JP S617141U
- Authority
- JP
- Japan
- Prior art keywords
- connector
- input terminal
- diode
- relay
- signal
- 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
Landscapes
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
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
図は本考案のアンテナ入力回路の一実施例の回路図であ
る。
１〜４・・・Ｆコネクタ、５・・・シールドケース（シ
ャーシ）、６・・・ＦＭ除去フィルタ、７・・・リレー
、８・・・スイッチ、９・・・デコーダ、１０・・・電
圧端子。The figure is a circuit diagram of an embodiment of the antenna input circuit of the present invention. 1 to 4...F connector, 5...shield case (chassis), 6...FM removal filter, 7...relay, 8...switch, 9...decoder, 10...voltage terminal.
Claims (1)
コーダ等が接続される第二のＦコネクタと、該デコーダ
或いはアンテナ等が接続される第三のＦコネクタと、チ
ューナに接続される第四のＦコネクタと、コイルの一端
にバイアス電圧が印加され該コイルの他端と接地との間
に第一めスイッチ手段が設けられ、且つ一方の入力端子
に入力する上部記第一のＦコネクタからの入力信号或い
は他方の入力端子に入力する上記第三のＦコネクタから
の入力信号を切り換えて上記第四のＦコネク多に出力す
るリレーと、上記第一のＦコネクタからの信号を上記第
二のＦ占ネクタ或いは上記リレーの上記一方の入力端子
側に切り換えるための第二のスイッチ手段とを具備する
アンテナ入力回路において、 上記第二のスイッチ手段を、上記第一のＦコネクタと上
記リレーの上記一方の入力端子側との間に接続した第一
のダイオードと、上記第一のＦコネクタと上記第二のＦ
コネクタとの間に接続した・、第二のダイオードとで構
成し、 上記第一のスイッチ手、段をオフすることにより、上記
リレーが上記一方の入力端子側の信号を選択すると共に
上記第一のダイオードがオン、上記第二のダイオードが
オフし、上記第一のスイッチ手段をオンすることにより
、上記リレーが上記他方の入力端子側の信号を選択する
と共に上記第二のダイオードがオン、上記第一のダイオ
ードがオフするようにしたことを特徴とするアンテナ入
力回路。[Claim for Utility Model Registration] A first F connector to which a CATV cable is connected, a second F connector to which a decoder, etc. is connected, and a third F connector, to which the decoder or antenna, etc. is connected; a fourth F connector connected to the tuner; a bias voltage applied to one end of the coil; a first switch means provided between the other end of the coil and ground; and an upper part connected to one input terminal; a relay that switches the input signal from the first F connector or the input signal from the third F connector that is input to the other input terminal and outputs it to the fourth F connector; and the first F connector. and a second switch means for switching a signal from the F connector to the one input terminal side of the second F connector or the relay, wherein the second switch means is switched to the first input terminal side of the relay. a first diode connected between the F connector and the one input terminal side of the relay, and the first diode and the second F connector.
and a second diode connected between the connector and the first switch, and by turning off the first switch stage, the relay selects the signal on the one input terminal side, and also selects the signal on the first input terminal side. The diode is turned on, the second diode is turned off, and the first switch means is turned on, so that the relay selects the signal on the other input terminal side, and the second diode is turned on. An antenna input circuit characterized in that a first diode is turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9023984U JPS617141U (en) | 1984-06-19 | 1984-06-19 | antenna input circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9023984U JPS617141U (en) | 1984-06-19 | 1984-06-19 | antenna input circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS617141U true JPS617141U (en) | 1986-01-17 |
Family
ID=30645053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9023984U Pending JPS617141U (en) | 1984-06-19 | 1984-06-19 | antenna input circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS617141U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0186773U (en) * | 1987-11-30 | 1989-06-08 |
-
1984
- 1984-06-19 JP JP9023984U patent/JPS617141U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0186773U (en) * | 1987-11-30 | 1989-06-08 |
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