In microwave power triodes the grid drive power causes grid lateral wire heating. This development calculates the temperature of the wire as a function of the drive power, physical dimensions and characteristics of the wire material, for the following boundary conditions:
I. Constant grid drive, grid lateral wire of infinite length not connected to a heat sink.
II. Same as I except the wire is of finite length brazed to a grid frame.
III. The grid excitation in the form of pulses, and the grid lateral wire of finite length brazed to a grid frame.
the equations were verified experimentally by calculating the temperature of a rod whose surface was heated in a vacuum and the temperature measured. The equations were also used to estimate the grid drive power necessary to melt tungsten lateral wire in a microwave power triode, GE18651. The repeated use of LaPlace and Fourier transforms. the Dirac impulse function and convolution integral are the principal mathematical tools used to solve the conduction equations.
| Identifer | oai:union.ndltd.org:WKU/oai:digitalcommons.wku.edu:theses-3937 |
| Date | 01 September 1976 |
| Creators | Tucker, Jewell |
| Publisher | TopSCHOLAR® |
| Source Sets | Western Kentucky University Theses |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | Masters Theses & Specialist Projects |
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