Method testing electron discharge tubes
US5012194A · kind A · utility
3Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1989 |
| Grant date | Apr 30, 1991 |
| Priority date | — |
| Expiry date | Sep 5, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of testing an electron discharge device incorporating a cathode electrode heated by bombardment of electrons emitted by a heater electrode so that selected parameters of such device may be determined without requiring that such device be operational, the method in particular including the steps of causing the cathode electrode to be brought to operating temperature within a short period of time and determining that the current due to electrons bombarding the cathode electrode is within predetermined limits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.