III. RESULTS AND DISCUSSIONS
The amplifier of Fig.1 is found to provide undistorted output up to 10mV AC input signal at 1KHz frequency while rest two amplifiers of Fig.2 and Fig.3 produce distortion-less results from 10 to 30mV AC input at similar frequency. Variation of maximum voltage gain as a function of frequency for all the three amplifiers is depicted in Fig.4. It is found that the Darlington pair amplifier produces 16.98 maximum voltage gain and 102.058 KHz bandwidth (lower cut-off frequency fL= 79.913 Hz and upper cut-off frequency fH = 102.138 KHz) with a poor response at higher frequencies [4], [6], [10]. However, Sziklai pair amplifier produces 102.309 maximum voltage gain with narrow bandwidth of 4.80 KHz (with fL=224.453Hz and fH=5.0556 KHz) [10] whereas the proposed amplifier produces significantly enhanced maximum voltage gain of 177.006 with wide bandwidth of 1.2091MHz (with lower cut-off frequency fL=547.54Hz and upper cut-off frequency fH=1.2097MHz).