JPS5784549A - Device for detecting flashing intensity - Google Patents

Device for detecting flashing intensity

Info

Publication number
JPS5784549A
JPS5784549A JP55160713A JP16071380A JPS5784549A JP S5784549 A JPS5784549 A JP S5784549A JP 55160713 A JP55160713 A JP 55160713A JP 16071380 A JP16071380 A JP 16071380A JP S5784549 A JPS5784549 A JP S5784549A
Authority
JP
Japan
Prior art keywords
voltage
flashing
converter
current
frequency
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
JP55160713A
Other languages
Japanese (ja)
Inventor
Kashio Kageyama
Toshiaki Nakada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55160713A priority Critical patent/JPS5784549A/en
Publication of JPS5784549A publication Critical patent/JPS5784549A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/44—Factory adjustment of completed discharge tubes or lamps to comply with desired tolerances

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE:To prevent any overflashing and underflashing of an electron gun by holding the maximum value of emission currents developed during the flashing, and displaying the maximum value by reading the value. CONSTITUTION:A flashing voltage 2 is applied to an electric-field discharging electron gun 1, thereby making a flashing current If to flow. At this point, thermions are developed on the surface of a tip 5, thereby making an emission current Ie to flow. The current Ie is changed into a voltage signal by means of a current detecting circuit 8, and the voltage signal generated is converted into a frequency signal by means of a voltage-frequency converter 9. Thus generated frequency signal is transmitted to a frequency-voltage converter 11, which is located in back of the converter 9, by means of a photosignal transmitter 10, and the voltage signal sent from the converter is held by a hold circuit 12. After that, the voltage held by the circuit 12 is displayed on a display part 7 after being amplified with an amplifier 13. Consequently, the strength of the flashing can be read quentitatively, and any overflashing and underflashing, which may be caused by conventionally used perceptive judgement, can be prevented.
JP55160713A 1980-11-17 1980-11-17 Device for detecting flashing intensity Pending JPS5784549A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55160713A JPS5784549A (en) 1980-11-17 1980-11-17 Device for detecting flashing intensity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55160713A JPS5784549A (en) 1980-11-17 1980-11-17 Device for detecting flashing intensity

Publications (1)

Publication Number Publication Date
JPS5784549A true JPS5784549A (en) 1982-05-26

Family

ID=15720855

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55160713A Pending JPS5784549A (en) 1980-11-17 1980-11-17 Device for detecting flashing intensity

Country Status (1)

Country Link
JP (1) JPS5784549A (en)

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