The Ebers-Moll model is a large-signal model used to describe the behavior of Bipolar Junction Transistors (BJTs). It accounts for the forward and reverse operation of both junctions in a BJT and is used for both NPN and PNP types. The model includes two diodes and two current sources and is essential for analyzing circuits where BJTs operate in active, cutoff, or saturation regions.
It is not applicable to JFETs, UJTs, or MOSFETs as they are governed by different physical principles and equations.
Final Answer: (4) BJT