3 ms·

Tell me you’ve never measured current with an oscilloscope without telling me that you’ve never measured current with an oscilloscope.

• jtwaleson 3y ago
  Hahaha you’re actually right, I bought my first scope a couple of weeks ago. But the primary mode of operation is voltage rather than current. It’s a bit like saying a thermometer is used to measure altitude.
  • jacquesm 3y ago
    No, not quite. It is actually impossible to measure a voltage without any current flow, ever so slight but it is always there. It is perfectly possible to measure temperature and altitude entirely independently of each other.
    • jtwaleson 3y ago
      My grasp on electricity is elementary, but as I understand it: measuring current in a circuit with a scope is always done via a conversion to a voltage, because that is what the scope is designed to measure. So the current is always derived from a measured voltage. With my silly thermometer example I meant: you can boil water, measure the temperature and derive the atmospheric pressure and altitude. Should have probably worded that clearer. Edit: and yes I understand what you are saying. Internally the scope measures voltage using the current that’s flowing across something with a very high resistance.
      • jacquesm 3y ago
        No problem, first coffee still has to kick in :) And good morning to you.
• deleted 3y ago
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