- #1
bitrex
- 193
- 0
In one of my electronics textbooks I have the following equation related to feedback in amplifiers:
[tex]K_f = \frac{K}{1-K\beta}[/tex]
[tex]\frac{dK_f}{K_f} = \frac{1}{1-K\beta}\frac{dK}{K}[/tex]
I'm not sure how this was derived - how was Kf differentiated with respect to itself?
[tex]K_f = \frac{K}{1-K\beta}[/tex]
[tex]\frac{dK_f}{K_f} = \frac{1}{1-K\beta}\frac{dK}{K}[/tex]
I'm not sure how this was derived - how was Kf differentiated with respect to itself?