Conventionally, in analysing sinusoidal oscillator circuits, one uses the Berkhausen’s criterion, viz. Aβ = 1 in a positive feedback amplifier whose gain without feedback is A and whose feedback factor is β. However, the identification of A and β poses problems because of mutual loading of the amplifier and the feedback network. A different approach is presented here which does not require such identification. The method is based on assuming a voltage at an arbitrary node and coming back to it through the feedback loop.
Source: S. C. Dutta Roy, “Analyzing Sinusoidal Oscillator Circuits: A Different Approach,” IETE Journal of Education, vol. 45, pp. 9–12, January–March 2004.
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Dutta Roy, S.C. (2018). Analysing Sinusoidal Oscillator Circuits: A Different Approach. In: Circuits, Systems and Signal Processing. Springer, Singapore. https://doi.org/10.1007/978-981-10-6919-2_28
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DOI: https://doi.org/10.1007/978-981-10-6919-2_28
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