Non Inverting and Inverting Amplifiers

[robostar]

Can someone please explain the difference between non inverting and inverting amplifiers for me, all I know at the moment is that the gradient of Non inverting amplifier is usually positive?

 

[Redbelly98]

I think you mean "gain" rather than "gradient".

An inverting amplifier produces a negative output for a positive input, and vice-versa (i.e. the gain is negative).

A non-inverting amplifier has a positive gain; the output has the same sign as the input.

Hope that helps.

 

[nlightner]

Sure, I'd be happy to explain the difference between non-inverting and inverting amplifiers. Both of these types of amplifiers are used to increase the amplitude of an input signal. The main difference between them lies in the way the input and output signals are connected.

In a non-inverting amplifier, the input signal is connected directly to the non-inverting input of the amplifier, while the inverting input is connected to ground. The output signal is taken from the output of the amplifier. This results in a positive gain, meaning that the output signal is in phase with the input signal and its amplitude is larger.

On the other hand, in an inverting amplifier, the input signal is connected to the inverting input of the amplifier, while the non-inverting input is connected to ground. The output signal is taken from the output of the amplifier, but it is inverted with respect to the input signal. This results in a negative gain, meaning that the output signal is out of phase with the input signal and its amplitude is also larger.

So, the main difference between these two types of amplifiers is the phase relationship between the input and output signals. In a non-inverting amplifier, the output signal is in phase with the input signal, while in an inverting amplifier, the output signal is out of phase with the input signal.

I hope this explanation helps to clarify the difference between non-inverting and inverting amplifiers. Let me know if you have any further questions.