Or it could have been ESD; winter time is notorious for low humidity (dry air), so it's much easier to accumulate a dangerous charge. All of my larger boards have a banana jack that has a 1 meg resistor to GND, and I either plug my wrist strap into the jack when I'm bagging/unbagging the board (in a conductive ESD-safe bag), or I connect it to my workbench ground. Since I also wear a wrist strap, my body and the board are always at the same potential.
I also have large resistors between each power supply and GND, for ESD protection. Typically 10Meg. I've never zapped an IC from ESD, or any other abuse. On Wednesday, December 9, 2020 at 11:30:45 AM UTC-8 newxito wrote: > I just wanted to share something that happened to me yesterday. I killed > the ESP32 on my nixie board just by touching the adjustable voltage > regulator IC with one finger. I’m pretty sure that I touched the feedback > pin causing the voltage to increase. > I already changed the design, and, in the future, I will only use > regulators with fixed output voltage. I hope they are less sensitive. > > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/b7cbe8f3-1679-4a6e-bcf5-020415d9b1b0n%40googlegroups.com.
