UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Home-brew 100:1 'scope probe.

24th Jul 2017, 5:15 pm

Scope probe co-ax is quite special (low capacitance i.e. a very thin inner conductor), your best bet is to modify an existing cheap 10:1 probe. question, why are you bothering with only 50V to measure? The circuit supplied only reduces the input (to the 'scope) volts and doesn't decrease the load to the circuit. I do have a proper 100:1 probe, 100M ohm resistance and only a couple of pF, now that is useful.

24th Jul 2017, 5:15 pm	#2
Guest Guest Posts: n/a	Re: Home-brew 100:1 'scope probe. Scope probe co-ax is quite special (low capacitance i.e. a very thin inner conductor), your best bet is to modify an existing cheap 10:1 probe. question, why are you bothering with only 50V to measure? The circuit supplied only reduces the input (to the 'scope) volts and doesn't decrease the load to the circuit. I do have a proper 100:1 probe, 100M ohm resistance and only a couple of pF, now that is useful.