JPH0270531U - - Google Patents

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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
Application number
JP15037988U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP15037988U priority Critical patent/JPH0270531U/ja
Publication of JPH0270531U publication Critical patent/JPH0270531U/ja
Pending legal-status Critical Current

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  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

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)

【実用新案登録請求の範囲】 入力RF信号内の任意のチヤンネルを選択する
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.
JP15037988U 1988-11-18 1988-11-18 Pending JPH0270531U (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5650138B2 (en) * 1978-05-31 1981-11-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5650138B2 (en) * 1978-05-31 1981-11-27

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