ivenzar
Member level 2
Hello,
I have a doubt with NO differential probes.
When you plug in an oscilloscope, it is referenced to the "building ground" (50Hz sinusoidal ref).
If I measure the output of a DC galvanic isolated convert (example: Flyback), I must connect the GND of the probe to a different potential (It is not the same ground as the building ground).
The same event occurs when you measure a battery. Battery ground is different from the oscilloscope ground, which is connected to the building net.
When I connect the ground of the probe to a different reference ground I see an small increase of the current comsumption .
Is there a rupture limit that an oscilloscope can support with diferent potential grounds?
Why happends this?
Greetings!
I have a doubt with NO differential probes.
When you plug in an oscilloscope, it is referenced to the "building ground" (50Hz sinusoidal ref).
If I measure the output of a DC galvanic isolated convert (example: Flyback), I must connect the GND of the probe to a different potential (It is not the same ground as the building ground).
The same event occurs when you measure a battery. Battery ground is different from the oscilloscope ground, which is connected to the building net.
When I connect the ground of the probe to a different reference ground I see an small increase of the current comsumption .
Is there a rupture limit that an oscilloscope can support with diferent potential grounds?
Why happends this?
Greetings!