am i correct in saying that in voltage follower/buffer circuit if there are no resistors present then there is no gain?

[Hamzah712]

 

[Julie.]

Correct!

Follow it logically, has to be zero gain/attenuation

 

[DPG]

Non-inverting buffer. 100% negative feedback.

 

[Lucien Nunes]

Vin(+) ~= Vin(-) when op-amp is in linear operation
Vin(-) = Vout due to the direct feedback connection
Therefore Vout ~= Vin(+)
Would be equal with infinite gain.

Advantages: High input impedance, high power gain
Disadvantages: With large swings, inputs work under non-ideal conditions far from ground. Stray C can interfere with stability.

 

[Simon47]

Hmm, do I detect someone getting us to do his homework ?

 

[Lucien Nunes]

I got that feeling when I saw the logic threshold q that you answered. @Hamzah712 what do your questions relate to?