Study of a Transistor Amplifier : RC Coupled-cum-Feedback Amplifier 

This is a two stage transistor amplifier with a provision for positive and negative feedback. The amount of feedback is adjustable and with the help of this, it is even possible to make the amplifier oscillate. A 9V stabilized power is provided on the same board.

The following studies can be carried out with this set-up

• Study of the basic circuit of a RC Coupled Amplifier

• Frequency response of RC Coupled Amplifier

• Effect of negative feedback on the gain and frequency response of the amplifier

• Effect of positive feedback on the gain and frequency response of the amplifier

• Verification of the condition of oscillation

• Study of different classes of amplifier

Measuring/Testing Instruments required

• A.C. Millivoltmeter (True R.M.S. A.C. Millivoltmeter, Model:ACM-102)

• A.F. Oscillator and a CRO

The above experimental set-up has been laid down on a decorated bakelite board with an aim of providing an easy understanding to the students. All components are well spread out for clarity and easy repairs and replacement. The set-up is provided with a booklet, which contains its detailed theory of operation, description, specifications, suggestions and discussion on the various experiments that may be performed with it.

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