WOW, this is wonderful. thank you for all that you have done to share the knowledge.
May I ask you the resister in the current probe is connected to the shield wire? and there are only 2 wires in there, correct? how far from the tip of the current probe would you say is the Inductor placed?
so below is my story with the toneohm.
I purchased a toneohm 950 about 8 months ago. Polar here in the US wants over $700 for probes of all 3 setups.
that's about how much I spend on the 950. I was not going to spend that much more on Probes only.
I had seen on ebay, pics of items (ebay-claric239) was selling, a toneohm 950 in the background, which was not for sale. so I massaged him to get info on its probes. This guy went all out, sent pictures and measured them for me. if you are looking for electronics check him out on ebay.
I think 850 and 950 current probes are the same but the 850 is the current probe by itself and the 950 has the drive source with it on the same jack.
ebay-claric239, did say it is an Inductor measured 220 uH and 10ohms resistance at the DIN pins. and your pictures explains it.
I started making my probes last week. Needle probes was really easy and it works really good.
the current tracer is work in progress. I have gone through a couple so far. on my last one I made an inductor in house with really tiny wire .004 inch, I didn't know there is a resister in lines. so, I wound enough wire to give me 10 ohm, about 12 feet. it works and is very directional. but I can use a smaller one, lol. the next version will be smaller. got to order an inductor and a resister.
the 950 also has the drive source voltage variable up to 550mvdc. it has the needle probes, current probes and the Planer probes.
the needle probes: voltage, current and resistance can be traced.
with the non contact current tracer: well it says it.
I don't think the Planer function on the toneohm 950 is going to of much use to me, for now.
thank you for the info and pics.