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Astable multivibrator loop gain analysis

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adhokshaja

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Can anyone please let me know how to perform ASTABLE MULTIVIBRATOR LOOP GAIN ANALYSIS.i have broken the loop at base of transistor as of now but unable to get proper phase and gain

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Loop gain analysis is a small-signal LINEAR analysis.
A multivibrator is a strong non-linear device and has no fixed DC operating point within the linear range of the tranfer curve.
Hence, a loop gain analysis makes no sense.
 

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