Smart SMD tester MS8911.

[iet]

Maximum capacitance value that tweezers can measure is 22 mF.
Measurement with a multimeter with a limit value of 100 mF.
33 mF.
55 mF.

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Inductance 0.1 uH was measured with two tweezers with the same result.
Now let's check the secondary parameter Rs when measuring inductance with tweezers LCR ST1. More accurate tweezers LCR Pro1 Plus.

[iet]

Resistors.
Minimum value - 0.1 mOhms.
First, it is necessary to perform a good zeroing of the readings with the tweezers probes closed. The upper part of the button from the old equipment was chosen as a device. The tips fit very tightly inside and provide a very reliable high-quality contact.
In this position, the tweezers were tested for 1 hour to understand what kind of drift it had. Within half an hour, the drift was 0.2 mOhms. At the end of the tests, it increased to 0.3 mOhms.
After a short break due to battery charging, I continued to study the drift of the tweezers in the milliohm range.
In the closed probe mode, the tweezers worked for 4 hours until the battery was completely discharged. Working for 3 hours with a green glow of the battery charge indicator, the drift did not change.And the most interesting thing is that with a red glow of the battery charge indicator, this drift remained at the same level until the battery was completely discharged.
In addition to studying the drift of the tweezers, my device for the zeroing mode of readings has proven its high reliability.
Resistor 1%.

[iet]

I have good news. My tweezers have new tips. The problem with good tips has always been. They are all of different design, have their own coating of different metals. But whatever the design features, they must be thin enough at the tips. The area of ​​contact with the component is very small, so over time the coating wears off. This leads to deterioration of contact and introduces some error in measurement. This is most noticeable in the mOhms and pF range. My tips are made of polished brass plates 1 mm thick. Excellent contact and rigidity. Easy to process. The contact area has increased slightly. Durable, wear-resistant. Always maintain high quality contact.
I conducted an experiment on the drift of tweezers with short-circuited probes. I repeated the experiment on a 5 mOhms 1% resistor. The clamping force was fixed. Over the course of 1 hour, the drift was +/- 0.2 mOhms.

[MiniCheck]

I have good news. My tweezers have new tips.

Where did you get these tips from?

[iet]

Where did you get these tips from?

I made them myself. I had to work a little with different tools.