JPH0370387U - - Google Patents
Info
- Publication number
- JPH0370387U JPH0370387U JP13226989U JP13226989U JPH0370387U JP H0370387 U JPH0370387 U JP H0370387U JP 13226989 U JP13226989 U JP 13226989U JP 13226989 U JP13226989 U JP 13226989U JP H0370387 U JPH0370387 U JP H0370387U
- Authority
- JP
- Japan
- Prior art keywords
- power amplifier
- input terminal
- cable
- output terminal
- 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
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Amplifiers (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案の一実施例保護回路を示した概
略図で、第２図は従来のＮＭＲ装置の高周波回路
を示す図である。
１……電力増幅器、２，５……入力端子、３…
…出力端子、４……接続ケーブル、６……ＮＭＲ
コイル、７……高周波スイツチ、８，１２……コ
ンデンサ、９……直流電源、１０，１１，１３…
…抵抗、１４……比較器、１５……基準電源。
FIG. 1 is a schematic diagram showing a protection circuit according to an embodiment of the present invention, and FIG. 2 is a diagram showing a high frequency circuit of a conventional NMR apparatus. 1...Power amplifier, 2, 5...Input terminal, 3...
...Output terminal, 4...Connection cable, 6...NMR
Coil, 7... High frequency switch, 8, 12... Capacitor, 9... DC power supply, 10, 11, 13...
...Resistor, 14...Comparator, 15...Reference power supply.
Claims (1)
給される出力端子と、外部から負荷へ信号を導入
するための入力端子と、出力端子と入力端子を接
続するケーブルとを備えた高周波回路において、
ケーブルが出力端子と入力端子の間に接続された
時直流的な閉回路が形成され該ケーブルを介して
直流電流が流れるように構成すると共に、該直流
電流の有無を判別する判別手段を設け、該判別手
段の出力信号に基づいて前記電力増幅器の保護回
路を動作させるようにしたことを特徴とする磁気
共鳴装置に於ける保護回路。 In a high frequency circuit comprising a power amplifier, an output terminal to which an output signal from the power amplifier is supplied, an input terminal for introducing a signal from the outside to a load, and a cable connecting the output terminal and the input terminal,
When the cable is connected between the output terminal and the input terminal, a DC-like closed circuit is formed and a DC current flows through the cable, and a determining means is provided for determining the presence or absence of the DC current, A protection circuit for a magnetic resonance apparatus, characterized in that the protection circuit of the power amplifier is operated based on the output signal of the discrimination means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13226989U JPH0370387U (en) | 1989-11-14 | 1989-11-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13226989U JPH0370387U (en) | 1989-11-14 | 1989-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0370387U true JPH0370387U (en) | 1991-07-15 |
Family
ID=31679736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13226989U Pending JPH0370387U (en) | 1989-11-14 | 1989-11-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0370387U (en) |
-
1989
- 1989-11-14 JP JP13226989U patent/JPH0370387U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0370387U (en) | ||
| JPH0488428U (en) | ||
| JPH0346870U (en) | ||
| JPH0187709U (en) | ||
| JPS6325376U (en) | ||
| JPS6411026U (en) | ||
| JPH0382956U (en) | ||
| JPH0434669U (en) | ||
| JPH029828U (en) | ||
| JPH01146684U (en) | ||
| JPS63117284U (en) | ||
| JPS61171333U (en) | ||
| JPH0455582U (en) | ||
| JPS5824995U (en) | High frequency heating device | |
| JPH0271269U (en) | ||
| JPS61191629U (en) | ||
| JPS60131867U (en) | AC motor rotation detection sensor | |
| JPH01143292U (en) | ||
| JPS6417473U (en) | ||
| JPS6150320U (en) | ||
| JPS62119129U (en) | ||
| JPS5866622U (en) | Ferro-resonant constant voltage transformer | |
| JPS6281068U (en) | ||
| JPS62104167U (en) | ||
| JPS6368011U (en) |