modified 8 years ago

AC Equivalent of Bipolar RC Phase Shift Oscillator

00:33:09

AC Equivalent of Bipolar RC Phase Shift Oscillator, 
Let R = 473 + (10k // 9k // 2.5k) = 2.11kΩ

Since R = Rc, we obtain : 

According to my simulation data,

f = (2πRC√10)^-1 = 0.2385 Hz = 238.5 mHz

β = (purple) / (green) ≈ 0.01955

A = gm × ( 10k // 9k // 2.5k ) = 34.5m × 1.636k = 56.442

The Loop Gain = βA = 0.01955 × 56.442 = 1.103441

published 8 years ago

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