How to measure Johnson Noise precisely practically? I tried using opamp/ low noise amplifier in cascade with band pass filter followed by multiplier circuit (squaring signal) and measured output which deviates from expected by nearly 10^(3 to 4) order.
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operational amplifier - What is the advantage of the inverting opamp circuit over non-inverting one?Op amp circuits are designed to achieve a specific gain regardless of the differences between individual op amps. One very common circuit ha...
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