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What does the circuit actually do? #18

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kiyu-git opened this issue Sep 7, 2020 · 0 comments
Open

What does the circuit actually do? #18

kiyu-git opened this issue Sep 7, 2020 · 0 comments

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@kiyu-git
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kiyu-git commented Sep 7, 2020

Hi there,
thank you for great jobs.
I want to know what the circuit actually do.
I found this circuit is a kind of instrumentation amp with 1.5V dc offset, but I can't find a some implementations of it.

  1. What is a function of 100k trimpot which is connected with 1M resistor and ground?
  2. Why is a resistor which is connected PIN8 and PIN 9 of LM324N 100K not but 10K (I guess it should be the same resistance as a resistor which is connected with PIN10 and ground, if the circuit is a kind of instrumentation amp).
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