JPS5813754U - FM-AM receiver intermediate frequency amplification circuit - Google Patents
FM-AM receiver intermediate frequency amplification circuitInfo
- Publication number
- JPS5813754U JPS5813754U JP10791681U JP10791681U JPS5813754U JP S5813754 U JPS5813754 U JP S5813754U JP 10791681 U JP10791681 U JP 10791681U JP 10791681 U JP10791681 U JP 10791681U JP S5813754 U JPS5813754 U JP S5813754U
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- frequency amplification
- amplification circuit
- emitter
- 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
Links
- 230000003321 amplification Effects 0.000 title claims description 8
- 238000003199 nucleic acid amplification method Methods 0.000 title claims description 8
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Superheterodyne Receivers (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
図面は本考案に係る中間周波増幅回路を用いたＦＭ−Ａ
Ｍ受信機の要部回路図である。
Ｔｒ２・・・・・・中間周波増幅用トランジスタ、Ｃ，
Ｆ・・・・・−ＡＭ用セラミックフィルタ、Ｓｌ・・・
・・・バンド切換スイッチ、Ｔｒ３・−−−−−フイッ
チングトランジスタ、Ｃ３・・・・ｅ・バイパス用コン
デンサ。The drawing shows an FM-A using the intermediate frequency amplification circuit according to the present invention.
FIG. 3 is a circuit diagram of the main parts of the M receiver. Tr2...Transistor for intermediate frequency amplification, C,
F...-AM ceramic filter, Sl...
...Band selection switch, Tr3 --- switching transistor, C3...e, bypass capacitor.
Claims (1)
を兼用するエミッタ接地形中間周波増幅用トランジスタ
を備えたＦＭ−ＡＭ受信機に、於いて、前記エミッタ接
地形中間周波増幅用トランジスタのエミッタと接地間に
ＡＭ用セラミックフィルタを接続するとともに、バンド
切換スイッチにてＯＮ、ＯＦＦ制御されるスイッチング
素子を介してＦＭ受信時のみ前記ＡＭ用セラミックフィ
ルタに′並列接続されるバイパス用コンデンサを設けた
ことを特徴とするＦＭ−ＡＭ受信機の中間周波増幅回路
。In an FM-AM receiver equipped with a grounded emitter intermediate frequency amplification transistor that serves both FM intermediate frequency signal amplification and AM intermediate frequency signal amplification, the emitter of the emitter grounded intermediate frequency amplification transistor is An AM ceramic filter is connected between the AM filter and the ground, and a bypass capacitor is connected in parallel to the AM ceramic filter only during FM reception via a switching element that is ON/OFF controlled by a band changeover switch. An intermediate frequency amplification circuit for an FM-AM receiver, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10791681U JPS5813754U (en) | 1981-07-20 | 1981-07-20 | FM-AM receiver intermediate frequency amplification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10791681U JPS5813754U (en) | 1981-07-20 | 1981-07-20 | FM-AM receiver intermediate frequency amplification circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5813754U true JPS5813754U (en) | 1983-01-28 |
Family
ID=29902341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10791681U Pending JPS5813754U (en) | 1981-07-20 | 1981-07-20 | FM-AM receiver intermediate frequency amplification circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5813754U (en) |
-
1981
- 1981-07-20 JP JP10791681U patent/JPS5813754U/en active Pending
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