This board is a sample and hold amplifier. It is used to take a sample of an analog input voltage and then hold that value on the output constant as the input changes. This is used in analog to digital (A/D) converters so that the digital output is the input voltage at the time the sample was triggered. This board is not in the standard building block catalog. It is used in the AX08 laboratory peripheral. Schematic of board as a scanned PDF file.
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Schematic of board as a scanned PDF file.