JPS61140468U - - Google Patents
Info
- Publication number
- JPS61140468U JPS61140468U JP2317585U JP2317585U JPS61140468U JP S61140468 U JPS61140468 U JP S61140468U JP 2317585 U JP2317585 U JP 2317585U JP 2317585 U JP2317585 U JP 2317585U JP S61140468 U JPS61140468 U JP S61140468U
- Authority
- JP
- Japan
- Prior art keywords
- noise reduction
- radio
- terminal
- reduction circuit
- tape
- 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
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Description
第１図は本考案のラジオ付テープレコーダを示
す回路図、第２図は従来の回路図である。
２，３……ＦＭおよびＡＭ受信回路、５……テ
ープ信号用前置増幅回路、６……雑音低減回路、
９……ラジオ・テープ切換スイツチ、１０……雑
音低減回路制御用スイツチ、１１……ＯＮ―ＯＦ
Ｆ制御端子、１２，１３……ダイオード。
FIG. 1 is a circuit diagram showing a tape recorder with radio according to the present invention, and FIG. 2 is a conventional circuit diagram. 2, 3...FM and AM receiving circuit, 5...Tape signal preamplifier circuit, 6...Noise reduction circuit,
9... Radio tape selection switch, 10... Noise reduction circuit control switch, 11... ON-OF
F control terminal, 12, 13...diode.
Claims (1)
の圧縮伸長方式雑音低減回路を備えるラジオ付テ
ープレコーダーにおいて、前記雑音低減回路の増
幅器の入力側にラジオの検波出力側とテープレコ
ーダの再生出力側とを接続し、ラジオ・テープ切
換用スイツチの可動端子に所定直流電源を接続す
ると共に該スイツチのラジオ用固定端子と前記雑
音低減回路のＯＮ―ＯＦＦ制御端子間に一方向導
電素子を接続し、前記スイツチのテープ用固定端
子と雑音低減回路制御用スイツチの可動端子間に
一方向導電素子を接続し、該雑音低減回路制御用
スイツチの固定端子を前記雑音低減回路のＯＮ―
ＯＦＦ制御端子側に接続し、前記ラジオ・テープ
切換用スイツチのテープ用固定端子とテープ再生
用前置増幅器の直流駆動電源供給端とを接続し、
ラジオ受信時には前記雑音低減回路制御用スイツ
チのＯＮ―ＯＦＦ状態の如何にかかわらず、常に
雑音低減回路を強制的にＯＦＦ状態にし、該回路
に含まれている略平坦な増幅器により入力信号を
増幅するラジオ付テープレコーダ。 In a tape recorder with a radio equipped with a signal compression/expansion noise reduction circuit including an amplifier with a substantially flat frequency versus amplitude characteristic, the detection output side of the radio and the playback output side of the tape recorder are connected to the input side of the amplifier of the noise reduction circuit. A predetermined DC power supply is connected to the movable terminal of the radio/tape switching switch, and a one-way conductive element is connected between the radio fixed terminal of the switch and the ON-OFF control terminal of the noise reduction circuit. A one-way conductive element is connected between the fixed tape terminal of the switch and the movable terminal of the noise reduction circuit control switch, and the fixed terminal of the noise reduction circuit control switch is connected to the ON--
Connect to the OFF control terminal side, connect the tape fixed terminal of the radio tape switching switch and the DC drive power supply terminal of the tape playback preamplifier,
During radio reception, the noise reduction circuit is always forcibly turned off regardless of the ON-OFF state of the noise reduction circuit control switch, and the input signal is amplified by a substantially flat amplifier included in the circuit. Tape recorder with radio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2317585U JPS61140468U (en) | 1985-02-20 | 1985-02-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2317585U JPS61140468U (en) | 1985-02-20 | 1985-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61140468U true JPS61140468U (en) | 1986-08-30 |
Family
ID=30516172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2317585U Pending JPS61140468U (en) | 1985-02-20 | 1985-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61140468U (en) |
-
1985
- 1985-02-20 JP JP2317585U patent/JPS61140468U/ja active Pending
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