Answer to Question #109525 in Electrical Engineering for Bharti

Question

Discuss Eber's Holl model for a transistor.

Answer 1

The Ebers model represents a transistor as a circuit in a simple way. The model also holds all the operation regions of a transistor. Ebers Moll model is based on assumption that base spreading resistance can be neglected. It will be obvious that why two diodes connected back to back will not function as a transistor from the following discussion, as dependent current source term will be missing which is responsible for all the interesting properties of transistor.