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university:courses:electronics:text:chapter-2 [06 Aug 2014 13:23] – minor edit Doug Merceruniversity:courses:electronics:text:chapter-2 [06 Jun 2017 16:44] – [2.8 The Differential Op Amp Stage] Doug Mercer
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 If all the input resistors R<sub>1</sub>, R<sub>2</sub>, ... R<sub>n</sub> are equal but not equal to R<sub>f</sub> then from the equation we can see that it can be simplified such that the output will be equal to the algebraic sum of the inputs times a common gain factor of -R<sub>f</sub>/R<sub>1</sub>. If all the resistors are made equal including R<sub>f</sub> then the output will be simply the negative sum of the inputs. If all the input resistors R<sub>1</sub>, R<sub>2</sub>, ... R<sub>n</sub> are equal but not equal to R<sub>f</sub> then from the equation we can see that it can be simplified such that the output will be equal to the algebraic sum of the inputs times a common gain factor of -R<sub>f</sub>/R<sub>1</sub>. If all the resistors are made equal including R<sub>f</sub> then the output will be simply the negative sum of the inputs.
  
-**Lab Activity 1. [[university:courses:electronics:electronics-lab-1|Simple Op Amps]]**+**ADALM1000 Lab Activity 1. [[university:courses:alm1k:alm-lab-1|Simple Op Amps]]**\\ 
 +**ADALM2000 Lab Activity 1. [[university:courses:electronics:electronics-lab-1|Simple Op Amps]]**\\ 
 +**ADALM2000 Lab Activity [[university:courses:alm1k:alm-lab-vectrosumamp|Summing Amplifier]]**
  
 =====2.8 The Differential Op Amp Stage  ===== =====2.8 The Differential Op Amp Stage  =====
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 <WRAP centeralign> Figure 2.8.1: Buffered differential amplifier stage </WRAP> <WRAP centeralign> Figure 2.8.1: Buffered differential amplifier stage </WRAP>
  
 +**ADALM1000 Lab Activity [[university:courses:alm1k:alm-lab-diffamp|Difference Amplifier]]**\\
 +**ADALM1000 Lab Activity [[university:courses:alm1k:alm-lab-current-sense|Current Sensing Difference Amplifier]]**
 =====2.9 The Instrumentation Amplifier===== =====2.9 The Instrumentation Amplifier=====
  
university/courses/electronics/text/chapter-2.txt · Last modified: 06 Jun 2017 16:44 by Doug Mercer