General > General Technical Chat

Silicone vs. PVC measuring leads

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shabaz:

--- Quote from: KE5FX on May 06, 2024, 08:07:55 pm ---That being said, it's disturbing how much I like this cheesy Chinese 30AWG hookup wire.  It is easy to strip with fingernails but also hard to damage the insulation accidentally.  Especially nice when point-to-point wiring is needed on dead-bug prototypes.

--- End quote ---

Thanks for the tip, I ordered some after seeing your comment, it arrived today and it looks great! I often use 30 AWG wire (mainly Kynar for prototypes etc), but the 30 AWG silicone wire from Amazon will be a nice low-cost alternative for general work, plus it may be useful for creating ultra-fine jumper wires if needed.

tooki:

--- Quote from: Zero999 on May 08, 2024, 05:32:06 pm ---
--- Quote from: wraper on May 05, 2024, 03:56:45 pm ---PVC wires become very stiff at low temperatures, and can even snap when bending if it's like -30oC

--- End quote ---
Does the LCD even work at such low temperatures?

--- End quote ---
Probably not if it actually got that cold, but I suspect a common scenario is that the meter is at or near room temperature (taken outside from a warm truck or building), but that the wire chills much, much faster in use due to its surface area to volume ratio.

Fun fact, though: some meters, like the Fluke 80 series, have internal temperature sensors used to automatically adjust the contrast voltage to the LCD!

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