Hard amplifier problem - Pleease anwer

[anb2020]

http://i.imgur.com/qmNBA.jpg

 

[Osgeld]

its not that hard, and its not a transistor

[retrolefty]

School must be back in session, and I like trick questions. 

[MarkT]

I don't know how to anwer...

[anb2020]

its not that hard, and its not a transistor

yupp it's an amplifier .. solve it please!

[MarkT]

But its clearly a homework problem you're passing on to us - if you at least had a go at answering
it first it wouldn't be so galling - people like to help, but cheating isn't helping, its avoiding understanding.

[anb2020]

But its clearly a homework problem you're passing on to us - if you at least had a go at answering
it first it wouldn't be so galling - people like to help, but cheating isn't helping, its avoiding understanding.

It is a challenge from the teacher ..
He said you can get help from anyone .. But I need you to understand the solution ..
I guess nobody knows how to solve it : (

[justjed]

I guess nobody knows how to solve it : (

Turn that frown upside down! There are pages and pages of op-amp instruction on the web. The 1st result I clicked on provided a very important clue in re. that circuit diagram.

its not that hard, and its not a transistor

From the drawing: 'All steps must be based on knowledge that we all know through mechatronics or before.' Hmmm, doesn't look like a Transformer either. 

[retrolefty]

But its clearly a homework problem you're passing on to us - if you at least had a go at answering
it first it wouldn't be so galling - people like to help, but cheating isn't helping, its avoiding understanding.

It is a challenge from the teacher ..
He said you can get help from anyone .. But I need you to understand the solution ..
I guess nobody knows how to solve it : (

Nice try and I will give you bonus points for being persistent.  

Why don't you check out any op-amp introductory primer, it should be simple to figure out the answer.

Lefty

[anb2020]

Thaaanks guys
I really hope I can solve it ..
and please, if anyone have any idea please don't hesitate to share your thoughts 

[oric_dan]

Lefty recognized the trick part right off - this is a problem in electronics, not mechatronics.
You're in the wrong classroom.

Also, your instructor tricked you - it's a really a trivial problem. As everyone here obviously
knows [except OP], you go to the basics for opAmp operation, and then solve for the special
case.

I really hope I can solve it ..

We all hope you can solve it too.

[anb2020]

Lefty recognized the trick part right off - this is a problem in electronics, not mechatronics.
You're in the wrong classroom.

Also, your instructor tricked you - it's a really a trivial problem. As everyone here obviously
knows [except OP], you go to the basics for opAmp operation, and then solve for the special
case.

I really hope I can solve it ..

We all hope you can solve it too.

You all know the answer?!?!?! I feel like an idiot!

http://www.code-lover.it/wp-content/uploads/2012/11/faceplam.png

[Osgeld]

thats cause we all read the very short basics of an opamp

hint google basics of an opamp
hint google
hint opamp
hint opamp basics

[oric_dan]

http://www.code-lover.it/wp-content/uploads/2012/11/faceplam.png

Oops, photon torpedo supposed to blow up Romulan ship, not Klingon ship.
Locutus reporting for duty. Assimilate me, now.

thats cause we all read the very short basics of an opamp

hint google basics of an opamp
hint google
hint opamp
hint opamp basics

OP, actually, there are several tricks your instructor played on you. So, here's more hints,

1. can you solve the ckt if you change the + and - terminals around? [then it works more
    normally, can you explain why?].

2. can you explain the difference between positive and negative feedback?

[westfw]

Major clue (?): http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/opampi.html
"The inputs draw no current."