Title:
電子銃、電子管及び高周波回路システム
Document Type and Number:
Japanese Patent JP6760949
Kind Code:
B2
Abstract:
The purpose is to make it possible to autonomously suppress a reduction in an electron beam without providing a means for supervising the electron beam intensity of a monitor or the like. An electron gun, provided with: a heater (12) in which one terminal serves as a heater terminal (H) and the other terminal serves as a shared terminal (HK), and in which a low-voltage power supply (21) is connected between the terminals, the heater (12) generating heat due to a current being supplied from the low-voltage power supply (21); and a cathode electrode (11) connected to the shared terminal (HK) and heated by the heater (12) to discharge thermal electrons. A cathode current (Ik) due to the thermal electrons discharged from the cathode electrode (11), and a current (Ih) due to the low-voltage power supply, flow in opposite directions through the heater (12).
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Inventors:
Yukihei Nakazato
Eiji Fujiwara
Eiji Fujiwara
Application Number:
JP2017541425A
Publication Date:
September 23, 2020
Filing Date:
September 16, 2016
Export Citation:
Assignee:
NEC Network and Sensor Systems Co., Ltd.
International Classes:
H01J1/20; H01J23/34
Domestic Patent References:
| JP2004159266A | ||||
| JP11242943A | ||||
| JP50041406U | ||||
| JP57034954U |
Attorney, Agent or Firm:
Masahiko Desk
Naoki Shimosaka
Naoki Shimosaka