This article describes how to measure MOSFET drain voltage and current. As part of that discussion it outlines how to use several types of current probes, how to identify the correct measurement ...

Depending on the levels involved, some data loggers can directly measure DC voltage and current. Except for power/energy application-specific models, most data loggers cannot measure AC voltage or ...

Using scope filters such as the input band limit and noise filters, enhanced resolution digital filters, and general-purpose digital filters.

Rectifying the transformer output converts the signal back to dc. Using R2 and C1 to create a low-pass filter creates a dc voltage proportional to the original ac.