The gain will never be less than 1, so the non-inverting op amp will produce an amplified signal that is in phase with the input. The output voltage can then be given as V out=V in+(V in/R 1)R 2. The current going through R 1 can then be given as V in/R 1.Īccording to the Current Rule, the inputs draw no current, so all that current must then flow through R 2. According to the Voltage Rule, the voltage at the inverting (-) input will be the same as at the non-inverting (+) input, which is the applied voltage V in.
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