Draw a circuit diagram of a transistor amplifier in CE configuration.
Define the terms: (i) Input resistance and (ii) Current amplification
factor. How are these determined using typical input and output
characteristics? (3 marks)
(1 1/2 marks)
Current amplification factor
The value of input resistance is determined from the
slope of IB verses VBE plot at constant VCE .
The value of current amplification factor is obtained from the slope
of collector IC verses VCE plot using different values of IB . (1/2 mark)
(If a student uses typical charateristics to determine these
values, full credit of one mark should be given)