JPS6472441A - Manufacture of heater for cathode - Google Patents
Manufacture of heater for cathodeInfo
- 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
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.
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)
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 |
-
1987
- 1987-09-14 JP JP62228274A patent/JPS6472441A/en active Pending
Cited By (2)
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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