Measurement system My question is what the purpose of components in the red marked, blue marked and black marked area?.
What is the purpose of the three part circuit? I'm studying for my final on introduction to circuits and came across a question about this circuit:  The question is:  Identify and describe the three parts of the circuit used for a measurement system for signal conditioning. Describe the signal conditioning one intends to use the circuit for.  From what I can tell the R1 and R2 resistors are the first part of the circuit used to use a fraction of the incoming voltage. The second part is the voltage follower used to move all of the incoming voltage to another circuit. Lastly there is a low pass filter used to filter off the high frequency voltage. The second question I'm not sure of the answer.
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