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Op amp biasing [Copy link]

Op amp biasing

VREF is connected to a resistor R 5.1K. Is this to raise the voltage of the op amp's non-inverting input? What is the purpose? Can anyone explain in detail?

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It feels like this is a static circuit, and the output is related to VREF, which can be calculated through simple analysis. The red resistor does not seem to have any effect in the circuit, and its two ends are connected to the power supply and ground respectively, so it cannot be used as the input signal of the circuit.   Details Published on 2022-9-28 16:51
 
 

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VREF is a voltage, calculate the bias of the op amp +, and the red resistor is the sensor model? The drawing is awkward.

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It feels like this is a static circuit, and the output is related to VREF, which can be calculated through simple analysis. The red resistor does not seem to have any effect in the circuit, and its two ends are connected to the power supply and ground respectively, so it cannot be used as the input signal of the circuit.

This post is from Circuit Observation Room
 
 
 

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