Good opportunity to share this life hack: I used to end up with a mess almost every time I used my coffee grinder, much like the picture in the article. Eventually I learned that this only happens with very dry beans. Adding a few tiny drops of water before grinding is enough to get rid of it pretty much completely. Since making coffee already involves water it’s as easy as dipping a finger and then running it through the beans.
Similarly dry air can be a literal component killer when working with electronics. Sometimes a humidifier is needed to ensure static build-up doesn't go too far.
This is actually an interesting challenge for places that work with electronics assembly at an industrial scale; they have competing drives to keep humidity high for ESD mitigation, but also deal with a lot of moisture-sensitive components whose acceptable exposure to free air (after baking, but before reflow) is measured in hours (and substantially worse with higher humidity).
No mention of lightening!
The idea that the triboelectric series is more guidelines than rules was interesting, but the metal-insulator distinction seems a bit off. Is there a triboelectric effect between two conductors? How? Why wouldn't the distribution of electrons even out in a pair of conductors, or do they mean non conducting metals?
And I imagine someone has looked at triboelectric effects between crystals of varying materials - does anyone know?
You might want to double check that. I would assume you are getting caught up on the gates of memory cells being capacitive and holding a charge. But both memory types use FET technology, and saying FETs use static electricity is sort of a stretch.
- The state in a SRAM cell is maintained by mutual feedback of two cross-coupled amplifier-like circuits. The currents involved may be low in the case of CMOS, but that's immaterial to the design that it's not simply static electricity representing the 0 or 1 state. But power must continue to be supplied for the state to persist.
- The state of a DRAM call is actually charge on a capacitor. It leaks and so DRAM requires refresh.
The dynamic/static refers to the need or no need for refresh.
Readit News
https://youtu.be/nLnB99VJ0HE
https://www.sciencedirect.com/science/article/pii/S259023852...
I just tried, worked like a charm :)
https://en.m.wikipedia.org/wiki/Triboelectric_effect
An electret is an item that presents a permanent static charge. It is like a permanent magnet. Has an enduring charge polarity.
The only use of an electret I know of is the electret microphone. And those use a very small electret.
In the video, the author made a large one. Hockey puck sized. He used some type of nylon. (I think I remember it right...)
http://amasci.com/weird/unusual/e-wall.html
https://journals.aps.org/prresearch/abstract/10.1103/PhysRev...
Put 2 conductors with different Seebecks in contact and you get a... thermocouple (at least?)
A quantum static effect?
- The state in a SRAM cell is maintained by mutual feedback of two cross-coupled amplifier-like circuits. The currents involved may be low in the case of CMOS, but that's immaterial to the design that it's not simply static electricity representing the 0 or 1 state. But power must continue to be supplied for the state to persist.
- The state of a DRAM call is actually charge on a capacitor. It leaks and so DRAM requires refresh.
The dynamic/static refers to the need or no need for refresh.