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university:courses:electronics:text:chapter-2 [06 Aug 2014 13:23]
Doug Mercer minor edit
university:courses:electronics:text:chapter-2 [06 Jun 2017 16:44]
Doug Mercer [2.7 Inverting Summing Op Amp Stage]
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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]]**\\ 
 +**ADALM1000 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