JPS6088649U - Radio reception interference prevention circuit using recording bias oscillation - Google Patents
Radio reception interference prevention circuit using recording bias oscillationInfo
- Publication number
- JPS6088649U JPS6088649U JP18187583U JP18187583U JPS6088649U JP S6088649 U JPS6088649 U JP S6088649U JP 18187583 U JP18187583 U JP 18187583U JP 18187583 U JP18187583 U JP 18187583U JP S6088649 U JPS6088649 U JP S6088649U
- Authority
- JP
- Japan
- Prior art keywords
- radio reception
- recording bias
- interference prevention
- prevention circuit
- reception interference
- 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
- Noise Elimination (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、従来例のブロック回路図、第２図は第１図の
アンテナ回路部の具体的回路図、第３図は本考案の実施
例のブロック回路図、第４図は第３図の実施例のアンテ
ナ回路部の具体的回路図、第５図は第４図のアンテナ回
路部の特にバイパスフィルタの他の変形例をしめす回路
図である。
３０はラジオ受信機付きテープレコーダ、２はラジオ受
信機部、３はテープレコーダ部、４は録音バイアス発振
回路部、５はアンテナ回路部、６は増幅回路部、７は周
波数混合回路部、８は局部発振回路部、９は中間周波数
増幅回路部、３３はバイパスフィルタ、ＴＲはトランジ
スタ、Ｌはチョークコイル。
第３図
第５図FIG. 1 is a block circuit diagram of a conventional example, FIG. 2 is a specific circuit diagram of the antenna circuit section of FIG. 1, FIG. 3 is a block circuit diagram of an embodiment of the present invention, and FIG. FIG. 5 is a circuit diagram showing another modification of the antenna circuit section of FIG. 4, especially the bypass filter. 30 is a tape recorder with a radio receiver, 2 is a radio receiver section, 3 is a tape recorder section, 4 is a recording bias oscillation circuit section, 5 is an antenna circuit section, 6 is an amplifier circuit section, 7 is a frequency mixing circuit section, 8 9 is a local oscillation circuit section, 9 is an intermediate frequency amplification circuit section, 33 is a bypass filter, TR is a transistor, and L is a choke coil. Figure 3 Figure 5
Claims (2)
れるものであって、前記ラジオ受信機のアンテナ回路部
にバイパスフィルタを挿入し、このバイパスフィルタは
、ラジオ受信機で受信されるラジオ受信信号を前記周波
数混合回路部の方には通過させるが、テープレコーダに
備えられる録音バイアス発振回路からの発振出力を減衰
ないしは消滅させる特性を有することを特徴とする、録
音バイアス発振によるラジオ受信妨害防止回路。(1) A tape recorder equipped with a radio receiver is equipped with a bypass filter inserted into the antenna circuit section of the radio receiver, and this bypass filter passes the radio reception signal received by the radio receiver to the radio receiver. A radio reception interference prevention circuit due to recording bias oscillation, characterized in that it has a characteristic of attenuating or eliminating oscillation output from a recording bias oscillation circuit provided in a tape recorder, although it passes through a frequency mixing circuit section.
録音バイアス発振によるラジオ受信妨害防止回路におい
て、前記バイパスフィルタはチョークコイルを含む、録
音バイアス発振によるラジオ受信妨害防止回路。(2) The radio reception interference prevention circuit using recording bias oscillation according to claim 1, wherein the bypass filter includes a choke coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18187583U JPS6088649U (en) | 1983-11-24 | 1983-11-24 | Radio reception interference prevention circuit using recording bias oscillation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18187583U JPS6088649U (en) | 1983-11-24 | 1983-11-24 | Radio reception interference prevention circuit using recording bias oscillation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6088649U true JPS6088649U (en) | 1985-06-18 |
| JPH0247650Y2 JPH0247650Y2 (en) | 1990-12-14 |
Family
ID=30394010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18187583U Granted JPS6088649U (en) | 1983-11-24 | 1983-11-24 | Radio reception interference prevention circuit using recording bias oscillation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6088649U (en) |
-
1983
- 1983-11-24 JP JP18187583U patent/JPS6088649U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0247650Y2 (en) | 1990-12-14 |
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