Question

To set up a common base transistor circuit and to study its input and output characteristic and to calculate its current gain.

Answer 1

EXPERIMENT NO. 8
AIM:- A study of input, output and transfer characteristics of a transistor in common base configuration
APPARATUS :- Two d.c power supplies ( 0 to 10 V), two voltmeters (0 to 10 V), two milliammeters (0 to 10 mA), two rheostats, a pnp transistor, connecting wires.
FORMULAE:-
i) Dynamic input resistance, ri = [delta(VEB) / delta(IE)] at VCB = constant
ii) Output resistance, ro = [delta(VCB) / delta(IC)] at IE = constant
iii) DC current gain, alphaDC = (IC) / (IE)
iv) AC current gain, alphaAC = [delta(IC) / delta(IE)] at VCB = constant.