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Siglent SDS5034X scope: Voltgaes allowed to apply to it?

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Martin72:

--- Quote from: Faringdon on January 08, 2023, 08:15:06 am ---Presumably if you  use a 10:1 probe then its 4000Vpk?

--- End quote ---

Never.
Even a 100:1 probe didn´t reach that value:

https://www.batronix.com/shop/measurement/probes/Testec-TT-HV-150.html

Reasons are isolation, max voltage across one resistor, lack of airgaps...
We always use a differential probe when measuring on smps, especially on primary switched ones.
And/or when measuring on more than one channel - because of the grounding.
Scope is grounded and every of it´s inputchannel too(normally).
If you want to measure on primary and secondary side at the same time and use normal probes, nevertheless if 10:1 or 100:1 or 1000:1, you short the secondary output to ground then - Not good...

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