JPH0322441U - - Google Patents
Info
- Publication number
- JPH0322441U JPH0322441U JP8230589U JP8230589U JPH0322441U JP H0322441 U JPH0322441 U JP H0322441U JP 8230589 U JP8230589 U JP 8230589U JP 8230589 U JP8230589 U JP 8230589U JP H0322441 U JPH0322441 U JP H0322441U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- switch
- circuit
- mode switching
- switching device
- 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
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Circuits Of Receivers In General (AREA)
- Stereo-Broadcasting Methods (AREA)
Description
第１図は本考案の第１実施例を示す図、第２図
は本考案の第２実施例を示す図である。
３……ＦＭフロントエンド用ＩＣ、５……ＡＭ
アンテナ回路、６ｂ……トランジスタ、８……中
間周波増幅及び検波回路、１０……ＦＭステレオ
復調回路、１２，１２′……モード切換スイツチ
、１５……バイアス発振回路、１７……第１周波
数調整回路、１８……第２周波数調整回路。
FIG. 1 is a diagram showing a first embodiment of the present invention, and FIG. 2 is a diagram showing a second embodiment of the present invention. 3...FM front end IC, 5...AM
Antenna circuit, 6b...Transistor, 8...Intermediate frequency amplification and detection circuit, 10...FM stereo demodulation circuit, 12, 12'...Mode switching switch, 15...Bias oscillation circuit, 17...First frequency adjustment Circuit, 18...Second frequency adjustment circuit.
Claims (1)
モード切換装置であつて、直流電源に接続された
共通端子、ＦＭステレオ復調回路の強制モノラル
端子に接続された第１の端子、ＦＭ高周波増幅段
に接続された第２の端子を有するスイツチを設け
、前記スイツチが第１の端子と共通端子との接続
状態に設定されているときには、ＦＭステレオ復
調回路の強制モノラル端子に直流電圧を供給して
ＦＭステレオ復調回路をモノラル状態となし、前
記スイツチが第２の端子と共通端子との接続状態
に設定されているときには、ＦＭ高周波増幅段に
直流電圧を供給してＦＭ高周波増幅段のＬｏｃａ
ｌ受信状態となすようにしたことを特徴とする電
子機器のモード切換装置。 (2) 前記電子機器がＡＭ受信機を含むと共に前
記スイツチがＡＭアンテナ回路に接続された第３
の端子を有し、第３の端子と共通端子が接続され
たとき、ＡＭアンテナ回路をＬｏｃａｌ受信状態
となすようにしたことを特徴とする請求項１記載
の電子機器のモード切換装置。 (3) 前記電子機器がテープレコーダを含むと共
に前記スイツチがテープレコーダのバイアス発振
回路に接続された第３の端子を有し、第３の端子
の共通端子が接続されたとき、バイアス発振回路
の発振周波数を変更するようにしたことを特徴と
する請求項１記載の電子機器のモード切換装置。[Claims for Utility Model Registration] (1) A mode switching device for electronic equipment equipped with at least an FM receiver, which has a common terminal connected to a DC power source and a forced monaural terminal of an FM stereo demodulation circuit. A switch is provided having a second terminal connected to the FM high frequency amplification stage, and when the switch is set to connect the first terminal and the common terminal, the forced monaural output of the FM stereo demodulation circuit is provided. A DC voltage is supplied to the terminal to put the FM stereo demodulation circuit into a monaural state, and when the switch is set to a state where the second terminal and the common terminal are connected, a DC voltage is supplied to the FM high frequency amplification stage. Loca of FM high frequency amplification stage
1. A mode switching device for an electronic device, characterized in that the device is set to a receiving state. (2) a third device in which the electronic device includes an AM receiver and the switch is connected to an AM antenna circuit;
2. The mode switching device for an electronic device according to claim 1, wherein the AM antenna circuit has a terminal, and when the third terminal and the common terminal are connected, the AM antenna circuit is placed in a local reception state. (3) The electronic device includes a tape recorder, and the switch has a third terminal connected to a bias oscillation circuit of the tape recorder, and when the common terminal of the third terminal is connected, the bias oscillation circuit is activated. 2. The mode switching device for electronic equipment according to claim 1, wherein the oscillation frequency is changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8230589U JPH0322441U (en) | 1989-07-13 | 1989-07-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8230589U JPH0322441U (en) | 1989-07-13 | 1989-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0322441U true JPH0322441U (en) | 1991-03-07 |
Family
ID=31628992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8230589U Pending JPH0322441U (en) | 1989-07-13 | 1989-07-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0322441U (en) |
-
1989
- 1989-07-13 JP JP8230589U patent/JPH0322441U/ja active Pending
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