Non-inverting amplifier configuration (AQA A-Level Physics): Flashcards

Preserves original polarity while amplifying

Negative feedback

$\frac{V_{\text{out}}}{V_{\text{in}}} = 1 + \frac{R_f}{R_1}$

1 (cannot be lower than 1)

No current (due to high input resistance)

$R_1 = 0$ or $R_f = \infty$

1

Interface between high-impedance source & low-impedance load

High input impedance

Low output impedance