JPH0270531U - - Google Patents
Info
- Publication number
- JPH0270531U JPH0270531U JP15037988U JP15037988U JPH0270531U JP H0270531 U JPH0270531 U JP H0270531U JP 15037988 U JP15037988 U JP 15037988U JP 15037988 U JP15037988 U JP 15037988U JP H0270531 U JPH0270531 U JP H0270531U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- amplifier
- tuner
- switch circuit
- input
- 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
- 230000005540 biological transmission Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Description
第１図はこの考案の実施例を示すブロツク図、
第２図は第１図のＲＦ増幅器２１の一例を示す回
路図、第３図は第１図の第１スイツチ回路２３お
よび第２スイツチ回路２５の一例を示す回路図、
第４図は従来のＦＭチユーナのブロツク図、第５
図は第４図のＶＨＦ増幅器２、ミキサ４またはＶ
ＨＦ搬送波発振器５内に設けられる同調回路の一
例を示す回路図である。
Figure 1 is a block diagram showing an embodiment of this invention.
2 is a circuit diagram showing an example of the RF amplifier 21 in FIG. 1, FIG. 3 is a circuit diagram showing an example of the first switch circuit 23 and the second switch circuit 25 in FIG. 1,
Figure 4 is a block diagram of a conventional FM tuner, Figure 5
The figure shows VHF amplifier 2, mixer 4 or VHF amplifier 2 in Figure 4.
5 is a circuit diagram showing an example of a tuning circuit provided within the HF carrier wave oscillator 5. FIG.
Claims (1)
と共に中間周波数信号に変換して出力するＦＭチ
ユーナにおいて、 ＲＦ増幅器と、 ＲＦ信号のレベルを増幅することなくそのまま
伝送する伝送通路と、 上記ＦＭチユーナのＲＦ信号入力端子を上記Ｒ
Ｆ増幅器の入力端または上記伝送通路の入力端の
いずれかに切換え接続する第１スイツチ回路と、 その第１スイツチ回路の切換えと連動して、上
記ＲＦ増幅器の出力端または上記伝送通路の出力
端のいずれかを後段のチユーナ回路の入力端に切
換え接続する第２スイツチ回路とを具備するＦＭ
チユーナ。[Claims for Utility Model Registration] An FM tuner that selects any channel in an input RF signal, converts it to an intermediate frequency signal, and outputs it, includes an RF amplifier and a transmission system that transmits the level of the RF signal as it is without amplifying it. The passage and the RF signal input terminal of the FM tuner are connected to the R
a first switch circuit that is switched and connected to either the input end of the F amplifier or the input end of the transmission path; and, in conjunction with the switching of the first switch circuit, the output end of the RF amplifier or the output end of the transmission path. and a second switch circuit that switches and connects one of the following to the input terminal of a subsequent tuner circuit.
Chiyuna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15037988U JPH0270531U (en) | 1988-11-18 | 1988-11-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15037988U JPH0270531U (en) | 1988-11-18 | 1988-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0270531U true JPH0270531U (en) | 1990-05-29 |
Family
ID=31423469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15037988U Pending JPH0270531U (en) | 1988-11-18 | 1988-11-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0270531U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5650138B2 (en) * | 1978-05-31 | 1981-11-27 |
-
1988
- 1988-11-18 JP JP15037988U patent/JPH0270531U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5650138B2 (en) * | 1978-05-31 | 1981-11-27 |