All of the small (2" or less in length) Kelvin clips I have tried are practically useless, their contact surfaces don't have serrations deep enough to hold onto anything. Most larger clips are pretty good in this respect. But the small ones for some reason are all very smooth.
I've tried generics from China (see pic below), and domestic-branded ones. No difference. Except price...
Does anyone know of a small Kelvin clip that actually has usable teeth?
Thanks, but that wouldn't work for me. I need a Kelvin clip arrangement with small contact area, not separate leads.
Those are the large clips, of which I have several. I want the small ones for this.
Those are the large clips, of which I have several. I want the small ones for this.
Oh, that's what 2" or less means in length means
I should have read your post more closely
None of the ones I tried were close to 2"; all were about 3.5" in length. Only other idea is to try 4 small (~2") Pomona or Pomona-like (E-Z Hook) mini grabbers - just not sure how much "grab" you need.
These E-Z Hook grabbers are the shortest (~2.25") single mini-grabber types I've seen that have some sorta/kinda semi-decent (but not real great) "grab", and the molded housings on the stackable banana plugs are better than the screw on plastic cover version. They come in various lead lengths.
If you find small, good grabbing, reliable measuring Kelvin clips let us know.
I definitely will post if I find something. I don't wanna mess with individual grabbers. Sometimes there woudn't be enuf room for them anyway. The 2" clips I have would be fine if they didn't slip off so easily.
Dremel mods time ?
Yeah, I've considered that and similar, but didn't want to bugger the plating.
File a little of the metal off where it doesn't matter to check what's under the plating.
Well.....I´ve totally forgot that I´ve already got small clips with good grip...
They came with my Ascel milliohm meter and got a nice building quality.
Grip is good, a small resistor with 0.8mm diameter leads they can handle it with no problems.
Ascel are just about 4”, OP is looking for 2” or less. Kind of hard to find such mini Kelvins so far....
File a little of the metal off where it doesn't matter to check what's under the plating.
I bought them a couple years ago from China via eBay. IIRC, they were advertised as "solid brass" with gold plating. But since a magnet picks them up, it's obvious what they really are...
These ones are new since I last looked:
https://www.ebay.com/itm/283109177832They are described as "pure copper", gold-plated. The teeth actually look like they could bite. So I ordered a couple sets. If they're steel, he can eat them.
File a little of the metal off where it doesn't matter to check what's under the plating.
I bought them a couple years ago from China via eBay. IIRC, they were advertised as "solid brass" with gold plating. But since a magnet picks them up, it's obvious what they really are...
These ones are new since I last looked:
https://www.ebay.com/itm/283109177832
They are described as "pure copper", gold-plated. The teeth actually look like they could bite. So I ordered a couple sets. If they're steel, he can eat them.
Hard to beat that price with free shipping.
Hard to beat that price with free shipping.
I think they both may be an error. But then, this seller looks like he sells closeouts/overstocks, or just about anything he can get his hands on
File a little of the metal off where it doesn't matter to check what's under the plating.
I bought them a couple years ago from China via eBay. IIRC, they were advertised as "solid brass" with gold plating. But since a magnet picks them up, it's obvious what they really are...
These ones are new since I last looked:
https://www.ebay.com/itm/283109177832
They are described as "pure copper", gold-plated. The teeth actually look like they could bite. So I ordered a couple sets. If they're steel, he can eat them.
Don't be too judgemental until you pull one completely apart.
The spring of course should be steel as too the pivot and any fastenings.
You'll need a small mechanics pickup magnet to find which bits are and which bits aren't.
Then just to throw another apanner in any conclusions, some stainless is magnetic too.
All of the small (2" or less in length) Kelvin clips I have tried are practically useless, their contact surfaces don't have serrations deep enough to hold onto anything. Most larger clips are pretty good in this respect. But the small ones for some reason are all very smooth.
I've tried generics from China (see pic below), and domestic-branded ones. No difference. Except price...
Does anyone know of a small Kelvin clip that actually has usable teeth?
Why all the wires with these clips? What is the wiring strategy?
You'll need a small mechanics pickup magnet to find which bits are and which bits aren't.
That's what I used. My hamhandedness requires that I keep it handy...
Why all the wires with these clips? What is the wiring strategy?
That particular set was for an HP 4328A. Using multiple wires to lower the inductance allowed me to use a longer lead length than they specified. I have a similar setup that I use for HP 4800A. But it's not a 4-wire setup.