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- 17:19, 21 August 2014 Guo (Talk | contribs) uploaded a new version of "File:USLO ADC pullup.jpeg"
- 10:21, 21 August 2014 Guo (Talk | contribs) uploaded "File:USLO ADC pullup.jpeg" (This board is designed for audio applications and therefore cancels out any DC-offset. We soldered a 6k4 Ω pull-up resistor on the negative input of the OpAmp on the Analogue Output Stage. This resistor forms a voltage divider with the 3k3 Ω resistor)