CHAPTER 4: SIGNAL TO NOISE RATIO

in IR, environmental noise is usually dc and can be reduced with a high-pass filter before amplification -(refer to figure 4-6 on next page) This is a chopper amplifier that uses a solid state switch to shot the input or output signal to the ground appearance of signal at certain stages 0) input a 6-mV dc signal a) switch converts to approx. sq ... ................
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