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Analytical Thermal Circuit Fast Warm Cathodes

An Analytical Lumped Thermal Circuit for the Determination of Fast Warm up and Steady State Characteristics Of Heater/Cathode Packages for TWT’s.

The challenge of determining fast warm up rates in small heater/cathode packages is critical to many tube development programs, but suffused with difficulties. An overvoltage is applied to the heater during the warm up time and current and hence power in the heater is determined by the resistance of the wire at any point in time.

Author: David Dyson, Chief Engineer, Tubes

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