Op Amp Design Basics - Non-Inverting Amplifier - Part 1

[chrisrole1]

Sir, did you mean that if we multiply (Kamp)(Ks) gives us the value of Vo/Vs,so for example, I supposedly get 10 by multiplying Kamp and Ks,is that means that for 1 volt in the input gives us 10 volts in the output.kindly clear this up for me,tnx

[drjcircuits]

@chrisrole1 Yes, you are correct in your last statement.  Dr J

[22Ezzo]

yes Vn =Vp

[Drajer]

So much better explanation than Bengt Molin's!

[drjcircuits]

Yes, in the ideal case. vout=A(vp-vn) so when the gain A is infinite (ideal), then vp-vn=0=vout/A and hence vp=vn. Hope this helps! Dr J

[knmleaguecity]

Does Vp = Vn ?

[perazaroberto2]

good



[NoHeartAnthony]

hey drj. great video thanks, could you please either answer this question, or direct me to the video that covers it?

(Vo/Vp) = 1 + (R3/R4) I can see that this equates to Vo equals the Positive input voltage added to the voltage divider created by the two resistors, but isnt the amplifier differential? I thought Vp and Vn had to be around about the same?

Thanks