T-Network Op-Amp Calculator

T-Network Op-Amp Calculator

Calculate the effective input resistance and closed-loop gain of an op-amp using a T-network.

Effective Resistance: \( R_{\text{eff}} = R_a + \frac{R_b\, R_c}{R_b + R_c} \)
Closed-loop Gain: \( A_v = -\frac{R_f}{R_{\text{eff}}} \)

Step 1: Enter Resistor Values

e.g., 1000 Ω

e.g., 2000 Ω

e.g., 2000 Ω

e.g., 4700 Ω

Formulas:
Effective Resistance: $$ R_{\text{eff}} = R_a + \frac{R_b\, R_c}{R_b + R_c} $$
Closed-loop Gain: $$ A_v = -\frac{R_f}{R_{\text{eff}}} $$