JPS58144741U - Hot cathode heating device for electron gun - Google Patents

Hot cathode heating device for electron gun

Info

Publication number
JPS58144741U
JPS58144741U JP4145182U JP4145182U JPS58144741U JP S58144741 U JPS58144741 U JP S58144741U JP 4145182 U JP4145182 U JP 4145182U JP 4145182 U JP4145182 U JP 4145182U JP S58144741 U JPS58144741 U JP S58144741U
Authority
JP
Japan
Prior art keywords
hot cathode
electron gun
heating device
cathode heating
power
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
Application number
JP4145182U
Other languages
Japanese (ja)
Inventor
山崎　茂朋
雅裕 井上
Original Assignee
株式会社明石製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社明石製作所 filed Critical 株式会社明石製作所
Priority to JP4145182U priority Critical patent/JPS58144741U/en
Publication of JPS58144741U publication Critical patent/JPS58144741U/en
Pending legal-status Critical Current

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  • Control Of Electrical Variables (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Electron Beam Exposure (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

【図面の簡単な説明】[Brief explanation of the drawing]

第１，２図はいずれも従来の電子銃用熱陰極を示す模式
図であり、第３図は本考案の一実施例としての電子銃用
熱陰極の加熱装置を示す電気回路図である。 １・・・電子銃、２・・・熱陰極としてのフィラメント
、３・・・ウェネルト電極、４・・・アノード、５・・
・整流回路、６・・・絶縁トランス、７・・・スイッチ
ング回路、８・・・電源を構成する増幅器、９・・・乗
算器、１０・・・ポテンションメータ、１１・・・電流
検出器、１２・・・ローパスフィルタ、１３・・・電圧
検出器、Ｃ・・・電力制御手段、Ｒ１，Ｒ２・・・抵抗
、Ｔｒｌ、Ｔｒ２・・・トランジスタ。1 and 2 are both schematic diagrams showing a conventional hot cathode for an electron gun, and FIG. 3 is an electric circuit diagram showing a heating device for a hot cathode for an electron gun as an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Electron gun, 2... Filament as a hot cathode, 3... Wehnelt electrode, 4... Anode, 5...
- Rectifier circuit, 6... Isolation transformer, 7... Switching circuit, 8... Amplifier configuring power supply, 9... Multiplier, 10... Potentiometer, 11... Current detector , 12...Low pass filter, 13...Voltage detector, C...Power control means, R1, R2...Resistor, Trl, Tr2...Transistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 電子ビーム発生用電子銃における熱陰極と、同熱陰極へ
加熱用電力を供給する電源と、上記の熱陰極と電源との
間に介装された絶縁トランスとをそなえ、同絶縁トラン
スの一次側の検出量に基づいて上記熱陰極へ供給される
電力の制御を行なう電力制御手段が設けられたことを特
徴とする、電子銃用熱陰極の加熱装置。The electron gun for generating an electron beam includes a hot cathode, a power source that supplies heating power to the hot cathode, and an isolation transformer interposed between the hot cathode and the power source, and the primary side of the insulation transformer. 1. A heating device for a hot cathode for an electron gun, comprising: power control means for controlling power supplied to the hot cathode based on a detected amount of the hot cathode.
JP4145182U 1982-03-24 1982-03-24 Hot cathode heating device for electron gun Pending JPS58144741U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4145182U JPS58144741U (en) 1982-03-24 1982-03-24 Hot cathode heating device for electron gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4145182U JPS58144741U (en) 1982-03-24 1982-03-24 Hot cathode heating device for electron gun

Publications (1)

Publication Number Publication Date
JPS58144741U true JPS58144741U (en) 1983-09-29

Family

ID=30052635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4145182U Pending JPS58144741U (en) 1982-03-24 1982-03-24 Hot cathode heating device for electron gun

Country Status (1)

Country Link
JP (1) JPS58144741U (en)

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