JPS5830358U - fm radio receiver - Google Patents
fm radio receiverInfo
- Publication number
- JPS5830358U JPS5830358U JP12339681U JP12339681U JPS5830358U JP S5830358 U JPS5830358 U JP S5830358U JP 12339681 U JP12339681 U JP 12339681U JP 12339681 U JP12339681 U JP 12339681U JP S5830358 U JPS5830358 U JP S5830358U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- radio receiver
- diode
- path
- receiving path
- 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
Landscapes
- Electronic Switches (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
第１図は従来のＦＭラジオ受信機の一例を示すブロック
図、第２図はそのスイッチング回路や一例を示す図、第
３図は該スイッチング回路の波形歪を防止するための従
来の変形例を示す回路図、第４図は第２図のスイッチン
グ回路の入出力信号波形図、第５図は本考案の一実施例
の主要部を示す図である。
１．２・・・アンテナ、３．４・・・受信系路、８．９
・・・中間周波増幅段、１０．１１・・・検波段、１２
・・・比較器、１５・・・インバータ、１６・・・マル
チプレックス回Ｌ Ｔｒ□、 Ｔｒ２・・・スイッチン
グ用トランジスタ、Ｄ３．Ｄ４・・・ダイオード、Ｖｌ
、■２・・・信号電圧。Fig. 1 is a block diagram showing an example of a conventional FM radio receiver, Fig. 2 is a diagram showing its switching circuit and an example thereof, and Fig. 3 is a conventional modification example for preventing waveform distortion of the switching circuit. FIG. 4 is an input/output signal waveform diagram of the switching circuit of FIG. 2, and FIG. 5 is a diagram showing the main parts of an embodiment of the present invention. 1.2... Antenna, 3.4... Reception path, 8.9
...Intermediate frequency amplification stage, 10.11...Detection stage, 12
...Comparator, 15...Inverter, 16...Multiplex circuit L Tr□, Tr2...Switching transistor, D3. D4...Diode, Vl
, ■2... Signal voltage.
Claims (1)
も電界強度の大きい受信波の受信系路を選択して、各々
の受信系路に接続した（とも１個のエミッタ接地トラン
ジスタから成るスイッチング面路を導通制御することに
より、該選択した受信系路に切換える受信機において、
上記トランジスタのベースに順方向にダイオードを挿入
接続し、該ダイオードを介して上記トランジスタを動作
させ″るように構成したことを特徴とするＦＭラジオ受
信機。Among the receiving paths connected to each of the plurality of antennas, the receiving path of the received wave with the largest electric field strength was selected and connected to each receiving path (both are switching circuits consisting of one emitter-grounded transistor). In a receiver that switches to the selected receiving path by controlling conduction of the surface path,
An FM radio receiver characterized in that a diode is inserted and connected to the base of the transistor in a forward direction, and the transistor is operated through the diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12339681U JPS5830358U (en) | 1981-08-20 | 1981-08-20 | fm radio receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12339681U JPS5830358U (en) | 1981-08-20 | 1981-08-20 | fm radio receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5830358U true JPS5830358U (en) | 1983-02-28 |
Family
ID=29917298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12339681U Pending JPS5830358U (en) | 1981-08-20 | 1981-08-20 | fm radio receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5830358U (en) |
-
1981
- 1981-08-20 JP JP12339681U patent/JPS5830358U/en active Pending
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