INVERTING AND NON INVERTING AMPLIFIER
Inverting amps flip the sign of the input signal (output = -input), while non-inverting amps amplify without flipping (output = gain * input)
Inverting an Operational Amplifier
- The signal is sent to the inverting input of the inverting operational amplifier circuit, and the non-inverting input is linked to ground.
- The output of this kind of amplifier is 180° out of phase with the input. This means that when a positive signal is sent to the circuit, the output will be negative.
- In the event that the Op-Amp is perfect, the idea of a virtual short can be used at the Op-Amp's input ports.
- So the voltage at the terminal that doesn't reverse is the same as the voltage at the terminal that does.
Non-Inverting Operational Amplifier
- The circuit that is made when the signal is sent to the non-inverting input is called a non-inverting op-amp.
- The output of this amplifier is exactly in phase with the input. This means that if you put positive power into the circuit, the output will also be positive.
- If we assume that the Op-Amp is perfect, we can use the idea of a "virtual short," which means that the voltage at the inverting and non-inverting terminals is the same.
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