JPS5927628U - automatic sweep receiver - Google Patents
automatic sweep receiverInfo
- Publication number
- JPS5927628U JPS5927628U JP12251182U JP12251182U JPS5927628U JP S5927628 U JPS5927628 U JP S5927628U JP 12251182 U JP12251182 U JP 12251182U JP 12251182 U JP12251182 U JP 12251182U JP S5927628 U JPS5927628 U JP S5927628U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- resistive voltage
- automatic sweep
- voltage divider
- output
- 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
- Circuits Of Receivers In General (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (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図は本考案の実施例の要部概略回路図、第２図は本
考案の他の実施例の要部概略回路図である。
主な図番の説明、１・・・中間周波増幅回路、２・・・
レベル判定回路、３・・・掃引制御回路、４・・・比較
器、８・・・抵抗分圧回路、９．１５・・・Ｎ型ＭＯ３
）ランジスタ、１０・・・ＲＳフリップフロップ。FIG. 1 is a schematic circuit diagram of a main part of an embodiment of the present invention, and FIG. 2 is a schematic circuit diagram of a main part of another embodiment of the present invention. Explanation of main drawing numbers, 1...Intermediate frequency amplification circuit, 2...
Level judgment circuit, 3... Sweep control circuit, 4... Comparator, 8... Resistance voltage divider circuit, 9.15... N-type MO3
) transistor, 10...RS flip-flop.
Claims (1)
路を備え、該回路の出力信号に応じて自動掃引の停止を
行なう自動掃引受信機において、中間周波増幅回路の出
力を一端に入力する比較器と、該比較器の他端に基準電
圧として分圧点の電圧を印加する抵抗分圧回路と、該抵
抗分圧回路の前記分圧点と一方の電源端子との間のイン
ピーダンスを変化させるため該抵抗分圧回路に接続され
た半導体スイッチとより前記レベル判定回路を構成し、
近距離選局モードと遠距離選局モードとのモード切換信
号に応答して、前記半導体スイッチをオンオフさせるよ
うにしたことを特徴とする自動掃引受信機。In an automatic sweep receiver that is equipped with a level determination circuit that determines the output level of an intermediate frequency amplification circuit and that automatically stops the sweep according to the output signal of the circuit, a comparator that receives the output of the intermediate frequency amplification circuit at one end; , a resistive voltage divider circuit that applies a voltage at a voltage dividing point as a reference voltage to the other end of the comparator, and a resistive voltage divider circuit for changing the impedance between the voltage dividing point of the resistive voltage dividing circuit and one power supply terminal. The level determination circuit is configured with a semiconductor switch connected to a resistive voltage divider circuit,
An automatic sweep receiver characterized in that the semiconductor switch is turned on and off in response to a mode switching signal between a short distance tuning mode and a long distance tuning mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12251182U JPS5927628U (en) | 1982-08-11 | 1982-08-11 | automatic sweep receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12251182U JPS5927628U (en) | 1982-08-11 | 1982-08-11 | automatic sweep receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5927628U true JPS5927628U (en) | 1984-02-21 |
Family
ID=30280005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12251182U Pending JPS5927628U (en) | 1982-08-11 | 1982-08-11 | automatic sweep receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5927628U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS639175U (en) * | 1986-07-02 | 1988-01-21 |
-
1982
- 1982-08-11 JP JP12251182U patent/JPS5927628U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS639175U (en) * | 1986-07-02 | 1988-01-21 |
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