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@ishan-nohePN • May 10, 2011
Welcome Gulielmo, we are unable to see your attachment. Please try uploading it once more. 😀
Once you do it CEans from electrical branch can help you. -
@harshad-ukH5ww • May 10, 2011
gulielmocan someone please explain me the circuit schematic that i have attached because i can't understand it.
Thank you
![[​IMG]](proxy.php?image=http%3A%2F%2Fimageshack.us%2Fphoto%2Fmy-images%2F685%2Fvariablegaincontrol.png%2F&hash=979c25bfa5b75056a3c6e54ae45b027f)
If you are not able to attach here give us the link of the image.
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@gulielmo-ExbvvG • May 10, 2011
here it the link:
#-Link-Snipped-#
thanks -
@harshad-ukH5ww • May 10, 2011
gulielmohere it the link:
#-Link-Snipped-#
thanksWhat is the thing in this circuit that makes you confused?
This is Simple Non inverting Amplifier circuit using OPAMP. -
@gulielmo-ExbvvG • May 10, 2011
This is a part of circuit that i design in eagle and it mend to connect the feedback loop with the negative pin of the op-amp as i found in every book that i looked at. but because the op-amp schematic symbol in eagle has the polarity of the op-amp in reverse (ie the positive up and the negative down in the triangle) i connected it by mistake like the picture and i thought that this is wrong and it won't give me any output because i couldn’t find a schematic with the feedback connection at the positive pin and the negative grounded.
So i thought to ask you to help what to do -
@harshad-ukH5ww • May 11, 2011
What exactly you want to make? Inverting Amplifier?
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@gulielmo-ExbvvG • May 11, 2011
yes. can you please tell me if i am going to get any output signal from it or do i have to reverse the pins of the chip before solder it on the pcb. it's not a big problem if the output is non-inverted but amplified because i can add an inverter in the next stage
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@harshad-ukH5ww • May 11, 2011
The circuit seems OK for me. Why not give it a try. 😀
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@gulielmo-ExbvvG • May 11, 2011
ok i will.
Thank you very much for your help -
@harshad-ukH5ww • May 11, 2011
gulielmook i will.
Thank you very much for your helpDo not forgot to note down voltage at every point and please share with us too. 😀