The Ebers-Moll Transistor Model - Transistors 101, episode 11

Описание: We use our simple test rig to measure how a transistor's collector
current varies with the voltage between base and emitter.
With the data from this test, we present the Ebers-Moll model,
where the collector current is an exponential function of
the base voltage.

We learn why transistor beta is still a useful model, although
it's incomplete.

We learn to do small-signal analysis using Ebers-Moll, by
applying the intinsic emitter resistance.

Test rig schematic and supporting files can be found
on the project GitHub:
https://github.com/kennykb/kevins-cav...


00:16 Review
00:55 The Ebers-Moll model
02:53 A real transistor
04:16 Why did beta work?
06:50 What went wrong before?
07:35 Intrinsic emitter resistance
08:47 The "Gothic arch" waveform
10:18 Beware of saturation!
11:02 Summary



Images:

"Jewell James Ebers"
https://commons.wikimedia.org/wiki/Fi...
Public domain in USA

"John L. Moll" courtesy of National Academy of Engineering
https://www.nae.edu/28866/Dr-John-L-Moll

"silence"
© 2013 Rebecca Barray
https://www.flickr.com/photos/rebecca...
CC-BY-NC-SA
https://creativecommons.org/licenses/...

"Men fight"
OpenClipArt user 'j4p4n'
https://openclipart.org/detail/318806...
CC0

"Transistor Girl"
  / cvbgyterrxk  
© 2021 Samuele Caldini
Used by permission.



Music:

“Light Sting” Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
http://creativecommons.org/licenses/b...