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

http://www.FreedomUniversity.TV. A series of videos on the operational amplifier. You can think of this as a buffer with gain. For questions on these and other videos, contact Professor Santiago at john@e-liteworks.com or vist the above website.

Category:

Music

Tags:

• op
• amp
• design
• basics
• non
• inverting
• amplifier
• circuit
• kirchoffs
• voltage
• law
• current
• ohms

[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

[22Ezzo]

yes  Vn =Vp

[Drajer]

So much better explanation than Bengt Molin's!

[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