Meaning of an electronic circuit will oscillate?

  • Thread starter amaresh92
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i wonder if any one can tell me the meaning of "The Barkhausen stability criterion is a condition to determine when an electronic circuit will oscillate."
in this what is the meaning of an electronic circuit will oscillate?

thanks
 

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  • #2
f95toli
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Well, that the circuit acts as an oscillator; i.e. sustains oscillations (usually sinusoidal) and without any external signal coming in (although the circuit will of course still need to be powered).
 
  • #3
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Well, that the circuit acts as an oscillator; i.e. sustains oscillations (usually sinusoidal) and without any external signal coming in (although the circuit will of course still need to be powered).
i found that the oscillator means to maintain a constant frequency output,but my doubt is we are giving input which also has a constant frequency?then whats the use of this?
will you please elaborate your answer?
and as i read, i feel that in this circuit we are controlling the input by giving feedback to it and the amplifier still amplify the input to the same extent as before.is it true?
 
  • #4
f95toli
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The criterion tells you when a circuit will oscillate on its own, without any external frequency. When the criteria is met it is enough to power the circuit from e.g. a battery and it will still give the same frequency out.

Moreover, the frequency of the oscillation will only depend on the properties of the circuit (i.e. component values etc).
 

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