Calculateur d'Amplificateur Sommateur
Calculez la sortie d'un amplificateur sommateur.
kΩ
kΩ
V
Voltage Gain
10.00 V/V
Gain (dB)20.00 dB
Tension de sortie10.000 V
Voltage Gain vs Ground Resistor (R1)
Formule
## Non-Inverting Op-Amp Configuration ### Formula **Gain = 1 + Rf / R1** **V_out = (1 + Rf / R1) x V_in** Output is in phase with input. Minimum gain is 1. Input impedance is very high, set by the op-amp input stage.
Exemple Résolu
R1 = 10k, Rf = 90k, input signal is 1 V.
- 01Gain = 1 + 90 / 10 = 10 V/V
- 02Gain in dB = 20 x log10(10) = 20 dB
- 03V_out = 10 x 1 = 10 V
Questions Fréquentes
What is the minimum gain?
Minimum gain is 1 (unity) when Rf = 0 or R1 is infinite. This is the voltage follower configuration.
Why choose non-inverting over inverting?
Non-inverting offers very high input impedance, no phase inversion, and a minimum gain of 1.
How does it compare to a voltage follower?
A voltage follower is a special case with gain = 1 (Rf = 0). It buffers signals without amplification.
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