JPS54125915A - Electron beam stabilizing circuit for pickup tube - Google Patents

Electron beam stabilizing circuit for pickup tube

Info

Publication number
JPS54125915A
JPS54125915A JP3286078A JP3286078A JPS54125915A JP S54125915 A JPS54125915 A JP S54125915A JP 3286078 A JP3286078 A JP 3286078A JP 3286078 A JP3286078 A JP 3286078A JP S54125915 A JPS54125915 A JP S54125915A
Authority
JP
Japan
Prior art keywords
tube
electron beam
cathode
resistance
voltage
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
JP3286078A
Other languages
Japanese (ja)
Inventor
Kichiji Fujiwara
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 Denshi KK
Original Assignee
Hitachi Denshi KK
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 Denshi KK filed Critical Hitachi Denshi KK
Priority to JP3286078A priority Critical patent/JPS54125915A/en
Publication of JPS54125915A publication Critical patent/JPS54125915A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To stabilize the electron beam for the pickup tube by connecting the resistance in series to the cathode of the pickup tube to detect the current flowing to the cathode and then controlling the heater voltage based on the voltage detected via the resistance.
CONSTITUTION: In the operation circuit which actuates pickup tube 1, resistance 14 is connected in series to cathode 3 of tube 1 to detect the voltage caused across resistance 14 by current IK flowing to cathode 3. And this voltage detected by resistance 14 is applied to controller 15 provided at the connection between heater 2 and cathode 3 of tube 1. Then the change of current IK caused by deterioration of the emission of tube 1 is detected, and heater voltage VF is controlled by the output of controller 15 and based on the detected voltage. Thus, the electron beam is stabilized for tube 1.
COPYRIGHT: (C)1979,JPO&Japio
JP3286078A 1978-03-24 1978-03-24 Electron beam stabilizing circuit for pickup tube Pending JPS54125915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3286078A JPS54125915A (en) 1978-03-24 1978-03-24 Electron beam stabilizing circuit for pickup tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3286078A JPS54125915A (en) 1978-03-24 1978-03-24 Electron beam stabilizing circuit for pickup tube

Publications (1)

Publication Number Publication Date
JPS54125915A true JPS54125915A (en) 1979-09-29

Family

ID=12370590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3286078A Pending JPS54125915A (en) 1978-03-24 1978-03-24 Electron beam stabilizing circuit for pickup tube

Country Status (1)

Country Link
JP (1) JPS54125915A (en)

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