EE 230 Lecture 11 Spring 2010

EE 230 Lecture 11 Spring 2010 - EE 230 Lecture 11 Basic...

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EE 230 Lecture 11 Basic Feedback Configurations Input/Output Impedance Inverting Amplifiers Summing Amplifiers
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Quiz 9 Determine the voltage gain of this amplifier. Assume the Op Amp is ideal
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And the number is ? 1 3 8 4 6 7 5 2 9 ?
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Quiz 9 Determine the voltage gain of this amplifier. Assume the Op Amp is ideal Solution: R 2 R 1 2 VF 1 R A = 1+ = 31 R
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Reminder: Exam 1 on Wednesday Students may bring one sheet (front and back) of notes There will be no 11:00 lectures next week but will resume the week of Feb 14 I will have limited email access after noon today so return email messages may be delayed Laboratory 4 - Purpose
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Finite Gain Feedback Amplifiers Consider the following circuit For R IN = and R 0 =0, this is an EXACT representation of Black feedback structure A β 1 A A FB + = FB 1 A β ± This is a Voltage Feedback Amplifier For A large Review from Last Time
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Finite Gain Feedback Amplifiers Consider the following circuit FB 1 A β ± 1 12 R β = R+R A β 1 A A FB + = 1 2 FB 1 R 1 A β R =+ ± Observe this serves as a basic finite-gain noninverting amplifier Review from Last Time
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Basic Noninverting Amplifier 1 2 FB 1 R A R =+ Gain can be accurately determined by resistors Circuit has excellent linearity Review from Last Time
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Basic Noninverting Amplifier Will you impress your boss if you were to use the more accurate gain expression instead of the approximation
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This note was uploaded on 02/01/2012 for the course EE 230 taught by Professor Mina during the Fall '08 term at Iowa State.

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EE 230 Lecture 11 Spring 2010 - EE 230 Lecture 11 Basic...

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