Predicting the end of service life for a vacuum electron device
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United States of America Patent
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Apr 18, 2017
Issued Date -
N/A
app pub date -
Jun 9, 2014
filing date -
Jun 9, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
The subject matter described herein generally relates to apparatus, systems, methods and associated computer instructions for predicting the end of service life of a space charge limited vacuum electron device. The device produces an electron beam current and has a cathode and a filament powered by an adjustable voltage power supply providing a voltage between a first low voltage and a second higher voltage to heat the cathode to an electron emitting temperature. The process includes periodically, while the device is in operation, adjusting the voltage provided by the power supply while monitoring the beam current, determining a knee-point in the voltage where the beam current begins to decrease as the voltage is decreased, and calculating, based on the determined knee-point and a predetermined voltage vs service life remaining relationship, the amount of service life left in the device.
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International Classification(s)
- 2014 Application Filing Year
- G01R Class
- 4836 Applications Filed
- 4099 Patents Issued To-Date
- 84.77 % Issued To-Date
Cited Art Landscape
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- 0 Citation Count
- G01R Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 18, 2028 |
