The Bipolar Junction Transistor - PowerPoint PPT Presentation

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The Bipolar Junction Transistor

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The Bipolar Junction Transistor A Bond Graph Model Michael C. Schweisguth, Graduate Student Fran ois E. Cellier, Professor ... – PowerPoint PPT presentation

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Title: The Bipolar Junction Transistor


1
The Bipolar Junction Transistor
  • A Bond Graph Model

Michael C. Schweisguth, Graduate Student
François E. Cellier, Professor
Dept. of Electrical
and Computer Engineering University of Arizona,
Tucson, Arizona, U.S.A.
2
Contents
  • The Circuit Model
  • Translation to a Bond Graph
  • Reformulation of the Bond Graph
  • Simulation Results
  • Physicality of the Model
  • Conclusions

3
The BJT Circuit Model
4
The Junction Diode Model
5
Translation to Bond Graph
6
Reformulation of Bond Graph
7
Simulation Results
time
50
200
8
Physicality of the Model
9
Conclusions
  • The Bond Graph has helped identify a potential
    problem with the physicality of the BJT circuit
    model
  • Manipulating the Bond Graph helped identify the
    true power flows through the device
  • The Bond Graph helped to find the equations that
    prove that no power is ever generated by the
    current sources (which, in fact, are nothing but
    nonlinear resistors)
  • The Bond Graph methodology ensured that the model
    representing the BJT is physically sound.
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