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  • Users: Rakestraw
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  1. Rakestraw

    pH meter Use

    I have a question reguarding the use of a desktop pH meter, The meter I am using comes with a BNC cap that shorts out the input to the pH meter, but I have to remove the cap to use a pH electrode to make measurements, what is the cap used for? and when would I use it?
  2. Rakestraw

    Measuring input impedance

    I have been asked to measure the actual input impedance of an analog circuit that is designed to accept micro volts as the input which is directly fed into a high impedance op-amp buffer stage. The typical frequency at the input is about .1 HZ, so I am treating it as DC so I am thinking that I...

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