Author Topic: EEVblog #453 mentions coax as a low impedance probe, was a video made of this?  (Read 723 times)

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Offline Octetz

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Hey, around 27min into the video he mentions making a probe out of regular coax. ( https://youtu.be/OiAmER1OJh4?t=1602 )

Does anyone know if a video describing how to build one that has proper termination and when it is useful?
 

Offline thm_w

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Well he did use one in the RuiDeng review video, but that ended up causing the followup to fix it and add a termination.

It can be useful if you need a cheap high bandwidth probe: http://jahonen.kapsi.fi/Electronics/DIY%201k%20probe/
Or for low signal levels at reasonable bandwidth (mV's).

Otherwise I just use a 1X switchable probe, which limits bandwidth to ~10MHz.
 


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