4 ms·
Am I the only bothered by the tagline “Now you can tell time and measure current on the go.” ? An oscilloscope measures voltage, not current.
by jtwaleson 3y ago
Am I the only bothered by the tagline “Now you can tell time and measure current on the go.” ?
An oscilloscope measures voltage, not current.
- jacquesm 3y agoWell, at least they got close. It's one of those 'headlines about things you know something about' things.
- trevyn 3y agoTell me you’ve never measured current with an oscilloscope without telling me that you’ve never measured current with an oscilloscope.
- jtwaleson 3y agoHahaha 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 agoNo, 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 agoMy 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 agoNo problem, first coffee still has to kick in :) And good morning to you.
- deleted 3y ago[deleted]
- not_your_vase 3y agoTech journalism in 2023. No one cares about facts. You should be happy they didn't write "you can measure blockchain" or "you can measure AI" with it. (Yet)
- jtwaleson 3y agoThey could have done a lot worse for sure ;)
- baz00 3y agoOscilloscopes measure current too. Differential measurement across a resistor (channel b subtracted from channel a) will result in a current measurement. Also current probes do exist - I own two.
- mdda 3y ago"Track your potential while staying current" would be more apt