Hello,
I can't devise the initial behaviour of Wien-bridge oscillator.
I thought that the output "randomly" switches to one polarity (due to noise, asymmetry or initial conditions) and then the V(-) is immediately V(out)/3. V(+) stays zero and because of higher voltage (for positive V(out)) on the negative input of the op-amp, the output changes to a negative voltage, this behaviour is fast repeated and the output should alternate.
But no simulation showed similar results. So, I am certainly wrong.
Can someone give me an explanation of what is happening before it starts to oscillate, please?
I am also interested in why the oscillations are delayed in LTSpice simulation and delay depends on the time of transient analysis.
Thank you in advance
I can't devise the initial behaviour of Wien-bridge oscillator.
I thought that the output "randomly" switches to one polarity (due to noise, asymmetry or initial conditions) and then the V(-) is immediately V(out)/3. V(+) stays zero and because of higher voltage (for positive V(out)) on the negative input of the op-amp, the output changes to a negative voltage, this behaviour is fast repeated and the output should alternate.
But no simulation showed similar results. So, I am certainly wrong.
Can someone give me an explanation of what is happening before it starts to oscillate, please?
I am also interested in why the oscillations are delayed in LTSpice simulation and delay depends on the time of transient analysis.
Thank you in advance