Opamp Inverting Amplifier Design & Simulation using LT Spice

Thread Starter

mishra87

Joined Jan 17, 2016
648
Hi Guys,

I have been associated with this fourm from more than 4 years.

I want to contribute vedio lecture to this so how I upload the same in fourm.
 

Audioguru again

Joined Oct 21, 2019
895
Why are you posting your video here? Is You Tube paying you for each view?
The audio sound is bad due to your broken English, severe accent and strong echoes.
 

Thread Starter

mishra87

Joined Jan 17, 2016
648
Why are you posting your video here? Is You Tube paying you for each view?
The audio sound is bad due to your broken English, severe accent and strong echoes.
No, Nobody is paying for me.
It is just for may be some people can learn something in electronics.
I am not professional YouTuber or Vedio Grapher.
 

Audioguru again

Joined Oct 21, 2019
895
I wonder why I do not post a You Tube video on a forum in your country using your language that I cannot speak, with strong echoes in the background?

Probably your video would be better on a forum in your country using your language and without echoes.
 

DickCappels

Joined Aug 21, 2008
6,187
Personal remark: The content of the video is fine. The fact that some people have difficulty with the accent does not detract from the quality and usefulness of the lecture.
 

danadak

Joined Mar 10, 2018
3,902
You start the video with no background, such as today we will discuss Operational
Amplifiers. Our analysis of Feedback will be the results of approximations, eg. We
do not consider effects of Aol on the G equations for example.


In your simulation C2 and C3 are irrelevant because they are in parallel
with V sources, which have 0 ohm impedance. But in actual application they
are needed because V sources in actual application are not ideal with 0 ohm
Impedance.

Your definition of R-R is not quite right. R-R means input and output voltages
can approach the supply rail voltages and still have the opamp in its linear
region. Older technology opamps could not do that, such as LM709, LM741,
LM324 (it could do one rail, not the other).

You call out CMRR as 90 V, should be 90 DB

You discuss drive 30 mA but do not mention that will not be at R-R output
Voltage spec

So far you do not describe what these specs mean, so does that mean
your audience is advanced ? That the video is a review ?

Your 100 ohm .1 u output filter has a 3 db BW of 16 Khz. Is that intentional ?
You should discuss this as a consideration.....


Regards, Dana.
 
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On TV when somebody has a strong accent they print subtitles as the translation on the screen.
Playing this video over and over, near the beginning it sounds like he wrongly says that the opamp inputs are the enverting transmitter and the non-enverting transmitter. Also, instead of saying "feedback" I do not know what he said.

In my city there are many new taxi and truck drivers who talk like in this video and an electronic surplus store (Sayal) from India where all the staff talk like him except without the echoes.
 
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