A non-inverting amplifier is an operational amplifier (op-amp) configuration where the input signal is connected to the non-inverting terminal, and the feedback is applied from the output to the inverting terminal. The gain (amplification) is determined by the feedback resistor values.
The basic working principle involves the op-amp maintaining a virtual short circuit between its input terminals, making the non-inverting input voltage approximately equal to the inverting input voltage. This configuration results in a positive feedback loop, causing the output voltage to be in phase with the input voltage.
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