Wein bridge oscillator

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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.

To view the Tabular column click here












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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