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Chip Amps Amplifiers based on integrated circuits

just wanna ask a few questions
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Old 2nd September 2012, 03:21 PM   #11
mali13 is offline mali13
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Quote:
Originally Posted by AndrewT View Post
Vin is where you feed in the audio signal.
V+ & V- (or Vcc & Vee) are where you feed in the power supply.
Oh so if I were to simulate the circuit in multisim, what should I put at the input?
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Old 2nd September 2012, 03:43 PM   #12
AndrewT is offline AndrewT  Scotland
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are you still mucking about with a simulator?
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Old 2nd September 2012, 05:30 PM   #13
jan.didden is offline jan.didden  Europe
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Quote:
Originally Posted by mali13 View Post
what do you mean about making the A2s sit at half the supply voltage for max signal range? sorry I got confused there.

and two more questions pls

I simulated the circuit in multisim and what I got at the output was two waveforms that are not identical to each other. the -vout was larger than +vout. why is that?

and Im supposed to use an AC supply here right?

thank you very much!
Look at the non-inverting input of the right hand A1. Do you see what kind of voltage that is?
That A1 is configured as a gain-of-one follower, do you see that?
So what is the voltage going to the A2's via R7 and R11?

jan
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Old 3rd September 2012, 07:54 AM   #14
Mooly is offline Mooly  United Kingdom
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just wanna ask a few questions
Quote:
Originally Posted by Mooly View Post
The two 100k resistors set the "mid point" and generate a 6 volt reference. This appears at the output of the right hand A1

The supplies are DC.
That should have read

"The two 100k resistors set the "mid point" and generate a 2.5 volt reference"
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