- See also
- References
In electronics, the Gummel plot is the combined plot of the base and collector electric currents, 
and 
, of a bipolar transistor vs. the base-emitter voltage, 
, on a semi-logarithmic scale. This plot is very useful in device characterization because it reflects on the quality of the emitter–base junction while the base–collector bias, 
, is kept constant.
A number of other device parameters can be garnered either quantitatively or qualitatively directly from the Gummel plot:[1]
- the common-emitter current gain,
, and the common-base current gain, 
, - base and collector ideality factors,
, - series resistances and leakage currents.
Sometimes the DC current gain, , is plotted on the same figure as well.
See also
- Hermann Gummel
- Bipolar junction transistor
- Gummel–Poon model
References
1. ^A. S. Zoolfakar et N. A. Shahrol, «Modelling of NPN Bipolar Junction Transistor Characteristics Using Gummel Plot Technique», in 2010 International Conference on Intelligent Systems, Modelling and Simulation (ISMS), 2010, p. 396–400.
{{DEFAULTSORT:Gummel Plot}}{{Electronics-stub}} 2 : Transistors|Plots (graphics)
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