Wein bridge oscillator
Aim: -
To determine and set up a Weing bridge oscillator using BJT and to observe the sinusoidal output waveform.
Apparatus: -
transistor, resistor, capacitor, bread board, connecting wire.
Theory: -
A wein bridge oscillator is a type of electronics oscillator that generates a sine wave. It can generate a large range of frequencies. The bridge comprises four resistors and capacitors. The oscillator can also be viewed as appositive gain amplifies combined with a bandpass filter that provides positive feedback.
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Procedure:-
1) Set up the circuit, on a breadboard, as shown in the figure.
2) Switch on Dc source and observe output waveforms on CRO
3) Measure the frequency of oscillation f.
4) Try different values of R and C compare the computed and measured frequency.
Result:-
Theoretical frequency = __________Hz
Pr Practical frequency = ________HZ
y
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