joe smith | Homemade HV Low Frequency Differential Oscilloscope Probe @joesmith-je3tq | Uploaded June 2018 | Updated October 2024, 4 days ago.
Video showing a few of the the basics of building a home made high voltage differential oscilloscope probe.

Possible future efforts on a higher frequency version may be found here:
eevblog.com/forum/testgear/teledyne-lecroy-waverunner-64xi/125

Links to the Youtube vidoes:
youtube.com/watch?v=KdjlLCcAUnY
youtube.com/watch?v=14g_MBJcsxU
youtube.com/watch?v=-BgtEF6cKeM