Unity Gain Frequency

Some articles on gain:

Gain Margin and Phase Margin - Examples Using Bode Plots
... Figures 6 and 7 illustrate the gain behavior and terminology ... Figure 6 compares the Bode plot for the gain without feedback (the open-loop gain) AOL with the gain with feedback AFB (the closed-loop gain) ... Because the open-loop gain AOL is plotted and not the product β AOL, the condition AOL = 1 / β decides f0dB ...

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