JPS6472441A - Manufacture of heater for cathode - Google Patents

Manufacture of heater for cathode

Info

Publication number
JPS6472441A
JPS6472441A JP62228274A JP22827487A JPS6472441A JP S6472441 A JPS6472441 A JP S6472441A JP 62228274 A JP62228274 A JP 62228274A JP 22827487 A JP22827487 A JP 22827487A JP S6472441 A JPS6472441 A JP S6472441A
Authority
JP
Japan
Prior art keywords
wound
primary coil
winding
thickly
coil
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
JP62228274A
Other languages
Japanese (ja)
Inventor
Yoshio Shoji
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.)
New Japan Radio Co Ltd
Original Assignee
New Japan Radio Co 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 New Japan Radio Co Ltd filed Critical New Japan Radio Co Ltd
Priority to JP62228274A priority Critical patent/JPS6472441A/en
Publication of JPS6472441A publication Critical patent/JPS6472441A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent the reduction of the size of a heater from being interfered and to prevent the slipping-off of Mo fine wires thickly wound around the legs of a primary coil by manufacturing such the primary coil, and secondary winding the primary coil. CONSTITUTION:A primary coil 1 is obtained by primary winding a W wire at a specified pitch with a specified dia., and thickly winding Mo fine wires around only the portions to be legs, and then the coil 1 is secondary wound to obtain a desirably structured one. In this method, the portions of the coil 1 where the fine wires 2 are not thickly wound are secondary wound so that the pitch of secondary winding can be fully narrowed and the reduction of size can be easily attained. Further, as the fine wires 2 at the legs are wound around a primary coil at the same time when the primary winding is carried out, they are thickly wound without the slipping-off.
JP62228274A 1987-09-14 1987-09-14 Manufacture of heater for cathode Pending JPS6472441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62228274A JPS6472441A (en) 1987-09-14 1987-09-14 Manufacture of heater for cathode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62228274A JPS6472441A (en) 1987-09-14 1987-09-14 Manufacture of heater for cathode

Publications (1)

Publication Number Publication Date
JPS6472441A true JPS6472441A (en) 1989-03-17

Family

ID=16873910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62228274A Pending JPS6472441A (en) 1987-09-14 1987-09-14 Manufacture of heater for cathode

Country Status (1)

Country Link
JP (1) JPS6472441A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008102916A (en) * 2006-09-22 2008-05-01 Semiconductor Energy Lab Co Ltd Wheeled vehicle mounted with rfid tag, rfid tag, speed measurement system, and speed measurement method
US8120491B2 (en) 2006-09-22 2012-02-21 Semiconductor Energy Laboratory Co., Ltd. Wheeled vehicle mounted with RFID tag, RFID tag, speed measurement system, and speed measurement method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008102916A (en) * 2006-09-22 2008-05-01 Semiconductor Energy Lab Co Ltd Wheeled vehicle mounted with rfid tag, rfid tag, speed measurement system, and speed measurement method
US8120491B2 (en) 2006-09-22 2012-02-21 Semiconductor Energy Laboratory Co., Ltd. Wheeled vehicle mounted with RFID tag, RFID tag, speed measurement system, and speed measurement method

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