JPH0159347U - - Google Patents
Info
- Publication number
- JPH0159347U JPH0159347U JP1987153375U JP15337587U JPH0159347U JP H0159347 U JPH0159347 U JP H0159347U JP 1987153375 U JP1987153375 U JP 1987153375U JP 15337587 U JP15337587 U JP 15337587U JP H0159347 U JPH0159347 U JP H0159347U
- Authority
- JP
- Japan
- Prior art keywords
- detector
- high frequency
- directional coupler
- level
- frequency detection
- 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
- 238000001514 detection method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 1
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
- Transmitters (AREA)
Description
第１図は本考案の一実施例の回路図、第２図は
第１図の動作原理を示す等価回路図、第３図は従
来の検出回路の一例の回路図である。
１……第１方向性結合器、２……トランスデユ
ーサ、３……第２方向性結合器、４……第１検波
器、５……第２検波器、６……スイツチ、６Ａ…
…切替スイツチ、７……メータ、８，９……ダイ
オード、１０……抵抗、１１，１２……直流電源
、１３……警報信号検出回路、１４……警報信号
抑制回路。
FIG. 1 is a circuit diagram of an embodiment of the present invention, FIG. 2 is an equivalent circuit diagram showing the operating principle of FIG. 1, and FIG. 3 is a circuit diagram of an example of a conventional detection circuit. DESCRIPTION OF SYMBOLS 1...First directional coupler, 2...Transducer, 3...Second directional coupler, 4...First detector, 5...Second detector, 6...Switch, 6A...
...Changing switch, 7...Meter, 8, 9...Diode, 10...Resistor, 11, 12...DC power supply, 13...Alarm signal detection circuit, 14...Alarm signal suppression circuit.
Claims (1)
を第２方向性結合器により分岐し、スルーモード
側の高レベルのルートに第１検波器を接続する一
方、分岐された低レベルのルートに第２検波器を
接続し、この第２検波器側を直接高周波検波レベ
ル検出手段に接続し、前記第１検波器側を開閉型
のスイツチを介して前記高周波検波レベル検出手
段に接続したことを特徴とする高周波検波レベル
検出回路。 The high-frequency signal detected by the first directional coupler is branched by the second directional coupler, and the first detector is connected to the high-level route on the through mode side, while the first detector is connected to the branched low-level route. 2 detectors are connected, the second detector side is directly connected to the high frequency detection level detection means, and the first detector side is connected to the high frequency detection level detection means via an open/close switch. High frequency detection level detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987153375U JPH0526841Y2 (en) | 1987-10-08 | 1987-10-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987153375U JPH0526841Y2 (en) | 1987-10-08 | 1987-10-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0159347U true JPH0159347U (en) | 1989-04-13 |
| JPH0526841Y2 JPH0526841Y2 (en) | 1993-07-07 |
Family
ID=31429158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987153375U Expired - Lifetime JPH0526841Y2 (en) | 1987-10-08 | 1987-10-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0526841Y2 (en) |
-
1987
- 1987-10-08 JP JP1987153375U patent/JPH0526841Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0526841Y2 (en) | 1993-07-07 |
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