JPH0485642U - - Google Patents
Info
- Publication number
- JPH0485642U JPH0485642U JP12894990U JP12894990U JPH0485642U JP H0485642 U JPH0485642 U JP H0485642U JP 12894990 U JP12894990 U JP 12894990U JP 12894990 U JP12894990 U JP 12894990U JP H0485642 U JPH0485642 U JP H0485642U
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- heating
- detection
- generation circuit
- type
- 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
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 1
Landscapes
- Electron Sources, Ion Sources (AREA)
Description
第１図は本考案の一実施例装置の構成概略図、
第２図は動作を説明するためのブロツク図、第３
図は加熱関数を表したグラフである。
１……支持体、２……陰極、３……切り欠き、
４……マイクロスイツチ、５……加熱関数発生回
路、６……電源回路、７……電子顕微鏡本体、８
……フイラメント、９……ＬａＢ６チツプ、１０
……電極、１１……絶縁部。
FIG. 1 is a schematic diagram of the configuration of a device according to an embodiment of the present invention;
Figure 2 is a block diagram for explaining the operation, Figure 3 is a block diagram for explaining the operation.
The figure is a graph showing the heating function. 1...Support, 2...Cathode, 3...Notch,
4... Micro switch, 5... Heating function generation circuit, 6... Power supply circuit, 7... Electron microscope body, 8
...Filament, 9...LaB 6 chips, 10
... Electrode, 11 ... Insulation section.
Claims (1)
に設けられた被検出部と、該被検出部の存在によ
り陰極の種類を検知する手段と、該検知手段から
の検知信号に基づいて該陰極の種類に応じた加熱
モードを設定するための加熱関数発生回路と、該
加熱関数発生回路からの関数信号に基づいて陰極
部を加熱するための電源回路を設けたことを特徴
とする電子銃。 A cathode, a support supporting the cathode, a detection portion provided on the support, means for detecting the type of cathode based on the presence of the detection portion, and a detection signal from the detection means. An electronic device comprising: a heating function generation circuit for setting a heating mode according to the type of the cathode; and a power supply circuit for heating the cathode portion based on a function signal from the heating function generation circuit. gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12894990U JPH0485642U (en) | 1990-11-30 | 1990-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12894990U JPH0485642U (en) | 1990-11-30 | 1990-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0485642U true JPH0485642U (en) | 1992-07-24 |
Family
ID=31876383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12894990U Pending JPH0485642U (en) | 1990-11-30 | 1990-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0485642U (en) |
-
1990
- 1990-11-30 JP JP12894990U patent/JPH0485642U/ja active Pending
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