JPS5864157U - FM/AM reception switching circuit in radio receiver - Google Patents

FM/AM reception switching circuit in radio receiver

Info

Publication number
JPS5864157U
JPS5864157U JP15707881U JP15707881U JPS5864157U JP S5864157 U JPS5864157 U JP S5864157U JP 15707881 U JP15707881 U JP 15707881U JP 15707881 U JP15707881 U JP 15707881U JP S5864157 U JPS5864157 U JP S5864157U
Authority
JP
Japan
Prior art keywords
circuit
switching circuit
frequency
trap
radio receiver
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
JP15707881U
Other languages
Japanese (ja)
Inventor
英史 木村
Original Assignee
株式会社日立製作所
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 by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to JP15707881U priority Critical patent/JPS5864157U/en
Publication of JPS5864157U publication Critical patent/JPS5864157U/en
Pending legal-status Critical Current

Links

Landscapes

  • Noise Elimination (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

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

、　　第１図はラジオ受信機における従来のＦＭ−ＡＭ
受信切換回路を示すブロック図、第２図は本考案の一実
施例を示すブロック図、である。 符号説明、１・・・ＡＭ用ＩＦ回路、２・・・ＦＭ用Ｉ
Ｆ回路、３・・・ＭＰＸステレオ復調回路、５Ｌ’　＋
　５Ｆ＋’−−−９ＫＨｚ、１９ＫＨｚ切換トラツプ、
７．８−・・ＦＭ−ＡＭ切換スイッチ。, Figure 1 shows the conventional FM-AM in a radio receiver.
FIG. 2 is a block diagram showing an embodiment of the present invention. Symbol explanation, 1... IF circuit for AM, 2... I for FM
F circuit, 3...MPX stereo demodulation circuit, 5L' +
5F+'---9KHz, 19KHz switching trap,
7.8--FM-AM selector switch.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ＡＭ用中間周波増幅回路と、ＦＭ用中間周波増幅回路と
、前記両増幅回路の出力を切り換えてＭＰＸステレオ復
調回路へ導く第１の切換回路とＭＰＸステレオ復調回路
の右出力側および左出力、側にそれぞれ接続されたトラ
ップ回路と、前記トラップ回路のトラップ周波数を第１
の周波数と第２の周波数の間で切り換える第２の切換回
路とを有して成り、前記第１の切換回路によるＡＭ用、
ＦＭ用中間周波増幅回路の切換動作に従って前記第２の
切換回路によるトラップ周波数の切換を行なうようにし
たことを特徴とするラジオ受信機番”こおけるＦＭ、Ａ
Ｍ受信切換回路。an AM intermediate frequency amplification circuit, an FM intermediate frequency amplification circuit, a first switching circuit that switches the outputs of the two amplification circuits and leads them to the MPX stereo demodulation circuit, and a right output side and a left output side of the MPX stereo demodulation circuit. and a trap frequency of the trap circuit connected to the first trap circuit.
and a second switching circuit that switches between the frequency of the first switching circuit and a second frequency,
FM, A, characterized in that the trap frequency is switched by the second switching circuit in accordance with the switching operation of the FM intermediate frequency amplification circuit.
M reception switching circuit.
JP15707881U 1981-10-23 1981-10-23 FM/AM reception switching circuit in radio receiver Pending JPS5864157U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15707881U JPS5864157U (en) 1981-10-23 1981-10-23 FM/AM reception switching circuit in radio receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15707881U JPS5864157U (en) 1981-10-23 1981-10-23 FM/AM reception switching circuit in radio receiver

Publications (1)

Publication Number Publication Date
JPS5864157U true JPS5864157U (en) 1983-04-30

Family

ID=29949607

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15707881U Pending JPS5864157U (en) 1981-10-23 1981-10-23 FM/AM reception switching circuit in radio receiver

Country Status (1)

Country Link
JP (1) JPS5864157U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06104782A (en) * 1992-09-18 1994-04-15 Rohm Co Ltd Fm/am receiving circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06104782A (en) * 1992-09-18 1994-04-15 Rohm Co Ltd Fm/am receiving circuit

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