Questions tagged [static-electricity]
69 questions
34
votes
2 answers
What's the difference among these static protection bags?
I have some old modems & other cards stored in plastic static bags and noticed that a few of them were distinct... these are all from the 1990s or maybe early 2Ks.
Here's a sampling:
From left to right, there are:
Opaque and…
StayOnTarget
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14
votes
6 answers
How to stop plastic granules sticking to the iron wall of their silo?
In our factory, we have some large (8 meters tall and 3 meters in diameters) iron silos for storing the plastic compounding material. Every time the silos are getting unloaded from the granules, the plastic powders stick to the inner metal layer due…
Farzin Karimi
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11
votes
5 answers
Anti-static mat connected to earth directly or 1E6 ohm resistor?
Should an anti-static mat be connected to earth directly or with 1E6 ohm resistance in between?
2 layer mat. Upper side: dissipative (10E7 ~ 10E10 ohm/m²). Bottom: conductive.
To be a little more precise: connection to earth will be thru a CGP…
user127725
11
votes
4 answers
Should there really be 1 MΩ resistance between an anti-static wrist strap and a pc?
My previous question: what exactly is grounded through motherboard standoffs?
The answers suggest that a PC case is grounded in 2 ways:
To the ground plane of the motherboard, through the brass standoffs.
The ground plane is grounded to the PSU,…
user127725
11
votes
3 answers
Anti-static wrist strap around your wrist or around your ankle?
Does it matter whether you wear your anti-static wrist strap around your wrist or around your ankle?
user127725
6
votes
2 answers
Do antistatic gloves help avoiding ESD?
On page 11 of this ESD Book:
ESD sensitive device can experience a
damaging discharge if touched by a person,
even if that person is properly grounded.
Increasing the electrical path's contact
resistance is one way to control the…
user127725
5
votes
1 answer
Darlington triplet - static electricity detector?
simulate this circuit – Schematic created using CircuitLab
I built this circuit. Different versions of this exist on the internet, some using an MPF-102 JFET instead of the 3 NPNs. The various sites describe it in several different ways:
"mains…
Annette Gates
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5
votes
4 answers
Avoid voltage peak / static discharge freezing an Arduino
I am building a speed-testing stand for electric wheelchairs with an Arduino Nano and a rotary encoder. The wheelchair is put on cable caddies, which turn the rotary encoders via a belt.
The setup itself with measuring the speed works pretty…
flaeshi
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5
votes
2 answers
Antistatic bag inside plastic bag?
I had to store a computer motherboard were the cardboard box was lost. The motherboard is in the original antistatic bag still closed with tape. I decided to put it inside a regular plastic bag thinking the motherboard would be protected from ESD by…
Ken Hansen
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4
votes
2 answers
Should stereo speaker cables be elevated to avoid static electricity
I am contemplating a new design for speaker cable stand-offs. I am unable to find support, only opinions, about static electricity produced by carpet affecting AC current between amplifiers and speakers. Does it affect sound quality or does it…
Mark Morris
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4
votes
1 answer
What makes my screwdrivers ESD safe?
I needed a new screwdriver set and found one called T4741SESD. In the product description it says the following:
Fully ESD compliant for safe use on sensitive electronic components
What is special about these screwdrivers that makes them ESD safe…
Ken Hansen
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4
votes
2 answers
What is the function of this cable surrounding the CRT of old televisions
I have opened old televisions, and each time, I'm wondering what is the function of this cable, roughly insulated with some tape.
Note: I know what are the risks of opening televisions.
MikeTeX
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4
votes
4 answers
Connect anti-static wrist strap to earth wire?
I have started doing some hobby electronics at home and got myself an anti-static srtist strap recently.
I am unsure as to where to attach it to. Most topics I found online regarded PC building and attaching it to the PC case, but I want to use it…
TheEdgeOfRage
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3
votes
2 answers
How can I discharge static electricity from my body?
I am planning to install a PCI Express Wifi-adapter in my PC. In order to do this, I would need to open my PC. I'm worried that if there is static electricity in my hands it could fry the motherboard.
I don't have an anti-static wristband, nor do I…
O S
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3
votes
2 answers
Type of wire for high voltage applications
What kind of wire is most suitable for HV low-current applications, where the allowed maximum is 25 kV and 5 W?
By type of wire I mean core and type of insulation.
As far as I can guess, even if the wire is thin it will not create much heat, because…
Edenia
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