Home | | Electronic Circuits II | Input Impedance of Emitter Follower

Chapter: Electronic Circuits - Feed Back Amplifiers

Input Impedance of Emitter Follower

Fig. 1.14 (i) shows the circuit of a loaded emitter follower. The a.c. equivalent circuit with T model is shown in Fig. 1.14 (ii).

Input Impedance of Emitter Follower

 

Fig. 1.14 (i) shows the circuit of a loaded emitter follower. The a.c. equivalent circuit with T model is shown in Fig. 1.14 (ii).


As for CE amplifier, the input impedance of emitter follower is the combined effect of biasing resistors (R1 and R2) and the input impedance of transistor base [Zin (base)]. Since these resistances are in parallel to the ac signal, the input impedance Zin of the emitter follower is given by :







Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail
Electronic Circuits - Feed Back Amplifiers : Input Impedance of Emitter Follower |


Privacy Policy, Terms and Conditions, DMCA Policy and Compliant

Copyright © 2018-2023 BrainKart.com; All Rights Reserved. Developed by Therithal info, Chennai.