06-08-2013, 12:30 PM
COMMON COLLECTOR TRANSISTOR AMPLIFIER
Aim:
1.To design and construct BJT Common Collector Amplifier using voltage divider bias
(self-bias).
2. To measure the gain and to plot the frequency response & to determination of Gain
Bandwidth Product
Design:
Since voltage amplification is done in the transistor amplifier circuit, we assume equal
drops across VCE and Emitter Resistance RE. VRE = 6V. The quiescent current of 1mA is
assumed. We assume a standard supply of Vcc = 12V.
Procedure
1. Connect the circuit as per the circuit diagram.
2. Set VS = 5 mV using AFO.
3. Keeping the input voltage constant, vary the frequency from 0 Hz to 1 MHz in regular
steps and note down the corresponding output voltage.
4. Plot the graph gain Vs frequency.
5. Calculate bandwidth from the graph.
Result
Thus a BJT Common Collector Amplifier is designed and implemented and the frequency
response curve is plotted.