JPH02137744U - - Google Patents
Info
- Publication number
- JPH02137744U JPH02137744U JP4703289U JP4703289U JPH02137744U JP H02137744 U JPH02137744 U JP H02137744U JP 4703289 U JP4703289 U JP 4703289U JP 4703289 U JP4703289 U JP 4703289U JP H02137744 U JPH02137744 U JP H02137744U
- Authority
- JP
- Japan
- Prior art keywords
- wehnelt
- support
- anode
- electrode
- protrusion
- 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
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000010894 electron beam technology Methods 0.000 claims 1
Landscapes
- Microwave Tubes (AREA)
Description
第１図は本考案の一実施例の電子銃の縦断面図
、第２図は従来の電子銃の縦断面図である。
１，２１……カソード、２，２２……ヒータ、
３，２３……カソード支持体、４，２４……ウエ
ネルト電極、５，２５……ウエネルト支持体、６
，２６……アカソード支持板、７，２７……アノ
ード電極、８，２８……アノード支持体、９，２
９……アノード支持板、１０，３０……真空外囲
器、１１，１２，３１，３２……絶縁セラミツク
。
FIG. 1 is a longitudinal sectional view of an electron gun according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of a conventional electron gun. 1, 21... cathode, 2, 22... heater,
3, 23... Cathode support, 4, 24... Wehnelt electrode, 5, 25... Wehnelt support, 6
, 26... cathode support plate, 7, 27... anode electrode, 8, 28... anode support body, 9, 2
9... Anode support plate, 10, 30... Vacuum envelope, 11, 12, 31, 32... Insulating ceramic.
Claims (1)
るウエネルト電極、アノード電極、各電極を支持
するアノード支持体、ウエネルト支持体及び電極
間を絶縁するセラミツクを少なくとも有する電子
銃において、高電圧が印加されるアノード−カソ
ード間の絶縁セラミツクの両端部に突出部を有す
るアノード支持体及び突出部とテーパ部を有する
ウエネルト支持体を設け、前記絶縁セラミツク内
側と突出部外側との隙間を夫々ｌ１，ｌ２とし、
突出部の高さをｈ１，ｈ２、突出部間のギヤツプ
をｌ０、アノード電極とウエネルト電極間の最小
ギヤツプをｄ１、ウエネルト支持体のテーパ部と
突出部先端との最小ギヤツプをｄ２としたとき、 ｈ１＞ｌ１，ｈ２＞ｌ２かつｌ０＞ｄ２＞ｄ１
なる関係を有することを特徴とするマイクロ波管
用電子銃。[Claims for Utility Model Registration] An electron gun having at least a cathode for emitting electrons, a Wehnelt electrode for focusing an electron beam, an anode electrode, an anode support for supporting each electrode, a ceramic for insulating between the Wehnelt support and the electrodes. An anode support having a protrusion and a Wehnelt support having a protrusion and a tapered part are provided at both ends of the insulating ceramic between the anode and the cathode to which a high voltage is applied, and a gap between the inside of the insulating ceramic and the outside of the protrusion is provided. are respectively l 1 and l 2 ,
The heights of the protrusions are h 1 and h 2 , the gap between the protrusions is l 0 , the minimum gap between the anode electrode and the Wehnelt electrode is d 1 , and the minimum gap between the tapered part of the Wehnelt support and the tip of the protrusion is d 2 , h 1 > l 1 , h 2 > l 2 and l 0 > d 2 > d 1
An electron gun for a microwave tube, characterized by having the following relationship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4703289U JPH02137744U (en) | 1989-04-21 | 1989-04-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4703289U JPH02137744U (en) | 1989-04-21 | 1989-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02137744U true JPH02137744U (en) | 1990-11-16 |
Family
ID=31562612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4703289U Pending JPH02137744U (en) | 1989-04-21 | 1989-04-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02137744U (en) |
-
1989
- 1989-04-21 JP JP4703289U patent/JPH02137744U/ja active Pending
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