DocumentCode :
1010808
Title :
Thermionic current in a parallel-plane diode
Author :
Giacoletto, Lawrence J.
Author_Institution :
Ford Motor Co., Dearborn, Mich.
Volume :
4
Issue :
1
fYear :
1957
Firstpage :
22
Lastpage :
24
Abstract :
An approximate formula is developed for the current of a parallel-plane diode including the effects of initial velocities of emission. For an oxide-coated cathode ( 
°K) the approximate result is: ![J = 2.33 \\times 10^{-6} frac{V^{3/2}}{x^{2}} \\cdot[1 + frac{11.4(J_{s}x^{2})^{1/4}}{V^{3/4}} + frac{3.22(J_{s}x^{2})^{1/8}}{V^{3/2}}]](/images/tex/15743.gif)
where, 
, Js , and 
are in suitable units such that Jx2and 
are in amperes and V in volts. A comparison is made between this result, Child\´s 3/2 power solution, and the Epstein-Fry-Langmuir solution. The result given above being an explicit solution of the current is particularly advantageous over prior approximate solutions.
°K) the approximate result is: where, , J are in suitable units such that Jx2and are in amperes and V in volts. A comparison is made between this result, Child\´s 3/2 power solution, and the Epstein-Fry-Langmuir solution. The result given above being an explicit solution of the current is particularly advantageous over prior approximate solutions.Keywords :
Capacitance; Cathodes; Conductivity; Current density; Diodes; Electron tubes; Equivalent circuits; Frequency dependence; Frequency measurement; Impedance; Inspection; Kelvin; P-n junctions; Permittivity; Physics; Space charge; Temperature; Transmission lines; Voltage;
fLanguage :
English
Journal_Title :
Electron Devices, IRE Transactions on
Publisher :
ieee
ISSN :
0096-2430
Type :
jour
DOI :
10.1109/T-ED.1957.14196
Filename :
1472175
Link To Document :
