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Topic: Hard amplifier problem - Pleease anwer (Read 3808 times) previous topic - next topic

anb2020

Jan 03, 2013, 12:45 am Last Edit: Jan 03, 2013, 01:39 am by anb2020 Reason: 1
http://i.imgur.com/qmNBA.jpg

  :smiley-roll:

Osgeld

its not that hard, and its not a transistor
http://arduino.cc/forum/index.php?action=unread;boards=2,3,4,5,67,6,7,8,9,10,11,66,12,13,15,14,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,86,87,89,1;ALL

retrolefty

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

MarkT

[ I won't respond to messages, use the forum please ]

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.
[ I won't respond to messages, use the forum please ]

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.  :smiley-roll:
... it is poor civic hygiene to install technologies that could someday
facilitate a police state. -- Bruce Schneier

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.

Quote
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.

Quote
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

http://arduino.cc/forum/index.php?action=unread;boards=2,3,4,5,67,6,7,8,9,10,11,66,12,13,15,14,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,86,87,89,1;ALL

oric_dan

Quote
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.

Quote
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."

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