JPS58169753U - Sound quality switching circuit for FM-AM radio receiver - Google Patents
Sound quality switching circuit for FM-AM radio receiverInfo
- Publication number
- JPS58169753U JPS58169753U JP6641082U JP6641082U JPS58169753U JP S58169753 U JPS58169753 U JP S58169753U JP 6641082 U JP6641082 U JP 6641082U JP 6641082 U JP6641082 U JP 6641082U JP S58169753 U JPS58169753 U JP S58169753U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- reception operation
- selection switch
- reception
- 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.)
- Granted
Links
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Circuits Of Receivers In General (AREA)
- Stereo-Broadcasting Methods (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
図示した回路は、本考案の音質切換回路の一実施例であ
る。
主な図番の説明、１・・・ＦＭ受信回路、２・・・ＡＭ
受信回路、３・・・共通回路、５・・・ステレオ復調回
路、１０・・・ヘッドフオンジャック、１４・・・選択
スイッチ、１５・・・低域フィルター用コンデンサー、
１７・・・スイッチングトランジスター。The illustrated circuit is an embodiment of the sound quality switching circuit of the present invention. Explanation of main drawing numbers, 1...FM receiving circuit, 2...AM
Receiving circuit, 3... Common circuit, 5... Stereo demodulation circuit, 10... Headphone jack, 14... Selection switch, 15... Low-pass filter capacitor,
17...Switching transistor.
Claims (1)
と、ＦＭ受信動作時前記選択スイッチを通して供給され
る電源により動作状態になるＦＭ受信回路と、ＡＭ受信
動作時前記選択スイッチを通して供給される電源により
動作状態になるＡＭ受信回路と、前記ＦＭ受信回路から
のＦＭ復調信号及びＡＭ受信回路からのＡＭ復調信号が
入力さ、れると共に各々の信号を同一の出力端子より出
力する共通回路と、該共通回路の出力端子より出力され
る信号が入力されると共に左右の信号に分離するステレ
オ復調回路と、前記共通回路の出力端子とステレオ復調
回路との間の信号路内に挿入接続された低域フィルター
用コンデンサーと、前記選択スイッチがＦＭ受信動作状
態にあるとき導通し前記低域フィルター用コンデンサー
の両端を短絡するスイッチング素子とより成るＦＭ−Ａ
Ｍラジオ受信装置の音質切換回路。a selection switch that switches between FM reception operation and AM reception operation; an FM reception circuit that is activated by power supplied through the selection switch during FM reception operation; and an FM reception circuit that operates by power supply supplied through the selection switch during AM reception operation. an AM receiving circuit that enters a state, a common circuit into which an FM demodulated signal from the FM receiving circuit and an AM demodulated signal from the AM receiving circuit are input, and outputs each signal from the same output terminal; and the common circuit. a stereo demodulation circuit that receives the signal output from the output terminal of the input terminal and separates it into left and right signals; and a low-pass filter inserted and connected in the signal path between the output terminal of the common circuit and the stereo demodulation circuit. FM-A comprising a capacitor and a switching element that becomes conductive and shorts both ends of the low-pass filter capacitor when the selection switch is in an FM reception operation state.
Sound quality switching circuit for M radio receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6641082U JPS58169753U (en) | 1982-05-06 | 1982-05-06 | Sound quality switching circuit for FM-AM radio receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6641082U JPS58169753U (en) | 1982-05-06 | 1982-05-06 | Sound quality switching circuit for FM-AM radio receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58169753U true JPS58169753U (en) | 1983-11-12 |
| JPS6241481Y2 JPS6241481Y2 (en) | 1987-10-23 |
Family
ID=30076284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6641082U Granted JPS58169753U (en) | 1982-05-06 | 1982-05-06 | Sound quality switching circuit for FM-AM radio receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58169753U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06104782A (en) * | 1992-09-18 | 1994-04-15 | Rohm Co Ltd | Fm/am receiving circuit |
-
1982
- 1982-05-06 JP JP6641082U patent/JPS58169753U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06104782A (en) * | 1992-09-18 | 1994-04-15 | Rohm Co Ltd | Fm/am receiving circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6241481Y2 (en) | 1987-10-23 |
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