Inverting & Non-Inverting Amplifiers

Inside this lesson

Derive the inverting amplifier gain formula Vout = -(Rf/Rin)×Vin from first principles using the golden rules
Derive the non-inverting amplifier gain formula Vout = (1+Rf/Rg)×Vin using the voltage divider relationship
Explain why non-inverting gain is always ≥ 1 while inverting gain can be any magnitude
Calculate output voltage for both configurations given resistor values and input voltage

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Educational content covering topics typical of a first- and second-year electrical engineering curriculum. Not a substitute for accredited coursework, and not suitable for real circuit or system design without review by a licensed professional engineer.