JPS5953493U - Radio warning device - Google Patents
Radio warning deviceInfo
- Publication number
- JPS5953493U JPS5953493U JP12046883U JP12046883U JPS5953493U JP S5953493 U JPS5953493 U JP S5953493U JP 12046883 U JP12046883 U JP 12046883U JP 12046883 U JP12046883 U JP 12046883U JP S5953493 U JPS5953493 U JP S5953493U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- low frequency
- output signal
- outputs
- signal
- 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.)
- Granted
Links
Landscapes
- Burglar Alarm Systems (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の電波警報装置の構成を示すブロック図、
第２図は上記装置の動作を説明するための図、第３図は
この考案の一実施例に係る電波警報装置の構成を示すブ
ロック図、第４図は上記装置の動作を説明するための図
である。
２１・・・入力端子、２２・・・低周波増幅回路、２３
・・・ＡＧＣ制御回路、２４・・・基準レベル制御回路
、２５・・・検出回路（比較回路）、２６・・・出゛力
端子。Figure 1 is a block diagram showing the configuration of a conventional radio wave alarm device.
FIG. 2 is a diagram for explaining the operation of the above device, FIG. 3 is a block diagram showing the configuration of a radio alarm device according to an embodiment of the invention, and FIG. 4 is a diagram for explaining the operation of the above device. It is a diagram. 21... Input terminal, 22... Low frequency amplifier circuit, 23
. . . AGC control circuit, 24 . . . Reference level control circuit, 25 . . . Detection circuit (comparison circuit), 26 . . . Output terminal.
Claims (1)
周波増幅回路の出力信号が常時一定めレベルになるよう
に利得制御を行う自動利得制御回路と、検波整流回路と
直流増幅回路とからなり、前記低周波増幅回路の出力信
号が入力され、受信レベルに応じた基準レベル信号を出
力する基準レベール制御回路と、前記低周波増幅回路の
出力信号と前記基準レベル制御回路の出力信号を比較す
ることにより、受信レベルの変動を検出し、警報信号を
出力する検出回路とを具備したことを特徴とする電波警
報装置。It consists of a low frequency amplifier circuit that amplifies and outputs the received signal, an automatic gain control circuit that performs gain control so that the output signal of the low frequency amplifier circuit is always at a certain level, a detection rectifier circuit, and a DC amplifier circuit. A reference level control circuit receives the output signal of the low frequency amplification circuit and outputs a reference level signal according to the received level, and compares the output signal of the low frequency amplification circuit with the output signal of the reference level control circuit. What is claimed is: 1. A radio wave alarm device comprising: a detection circuit that detects fluctuations in reception level and outputs an alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12046883U JPS5937909Y2 (en) | 1983-08-02 | 1983-08-02 | Radio warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12046883U JPS5937909Y2 (en) | 1983-08-02 | 1983-08-02 | Radio warning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5953493U true JPS5953493U (en) | 1984-04-07 |
| JPS5937909Y2 JPS5937909Y2 (en) | 1984-10-20 |
Family
ID=30276090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12046883U Expired JPS5937909Y2 (en) | 1983-08-02 | 1983-08-02 | Radio warning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5937909Y2 (en) |
-
1983
- 1983-08-02 JP JP12046883U patent/JPS5937909Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5937909Y2 (en) | 1984-10-20 |
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