Wolfram Computation Meets Knowledge

Noninverting Amplifier

A noninverting amplifier is an operational amplifier where the output voltage changes in the same direction as the input voltage. An operational amplifier (often op-amp or opamp) is a DC-coupled, high-gain electronic voltage amplifier with a differential input and, usually, a single-ended output.

The voltage gain equals 1 plus the ratio resistances in the amplifier. The output voltage equals the input voltage times 1 plus the ratio resistances in the amplifier.


{QuantityVariable[Subscript["V", "out"], "ElectricPotential"] == (1 + QuantityVariable[Subscript["R", "2"], "ElectricResistance"]/QuantityVariable[Subscript["R", "1"], "ElectricResistance"])*QuantityVariable[Subscript["V", "in"], "ElectricPotential"], QuantityVariable["A", "Unitless"] == 1 + QuantityVariable[Subscript["R", "2"], "ElectricResistance"]/QuantityVariable[Subscript["R", "1"], "ElectricResistance"]}

symbol description physical quantity
Vout output voltage "ElectricPotential"
R1 resistance 1 "ElectricResistance"
R2 resistance 2 "ElectricResistance"
Vin input voltage "ElectricPotential"
A voltage gain "Unitless"



Source Metadata

Publisher Information