Questions tagged [static-electricity]

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3answers
108 views

Voltage / current from Van De Graff generator vs. voltage / current from AC wall sockets in homes

The Van De Graff generator can generate voltages in the kV and MV range. I have read that if I touch the Van De Graff generator producing, say 50kV, with one hand (myself being insulated from ground ...
3
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2answers
66 views

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. ...
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1answer
27 views

Would the static charge from a silicone work mat be dissipated by an ESD mat if placed on top of it?

I know the proper rubber mats that are both ESD safe and heat resistant are quite expensive, and definitely out of the price range of a beginner hobbyist like me. I have also read that the silicone ...
0
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1answer
43 views

Is a metallic conductor within an electrostatic field necessarily subject to discharge?

Basically what I'm trying to determine is if the new RAM chips I received in the mail were potentially damaged from static electricity. Late last night, tired and foggy, I built up a considerable ...
33
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2answers
1k views

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 ...
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1answer
917 views

How to get rid of static electricity on a plastic slide

I've got a indoor spiral slide which appears have a large amount of static building. It frequently gives little shocks to people going down the slide. I've also got WS1825 addressable light strips on ...
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2answers
69 views

How prevent discharging static electricity when touching metal case of sensitive circuit?

I have made a metal box including raspberry pi, touch screen and lcd screen. my problem is when i touch the box static electricity cause arc and shock to device and cause software failure also. i ...
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1answer
105 views

Measuring mains voltage with DMM and only one probe gives 100+ volts!

While trying to find out what is going on here , when measuring the mains voltage with a multimeter by connecting the red probe to the line and leaving the black (com) one laying in the floor after ...
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5answers
202 views

Is there a reason that dryers aren't grounded [closed]

One minute ago I cried out in pain, after being electrocuted again by my clothes dryer; probably the thousandth time in my life that this has happened. I was taking out clothes after they're dry, ...
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1answer
28 views

Static electricity high voltage and charge difference

I have often heard heard voltage being described as a difference in charge between two points. If this is true, how is static electricity such high voltage even though it is a relatively small ...
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2answers
295 views

Are ESD safe tools necessary with proper setup?

My current setup is an ESD mat and ESD wristband both connected via alligator clips to unpainted screws that are screwed into a secondary PC power supply (not mounted in a PC case.) This power supply ...
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2answers
140 views

Grounding Yourself When Working On Electronics

I was wanting to discuss if using a wrist strap connected to a in unpainted screw on a pc power supply (this screw is a mounting screw it is not touching anything inside the power supply) that is not ...
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1answer
52 views

Faraday cage and static electric field

Can anyone explain - what is the difference between static and varying electro-magnetic fields? I know the definition for what is static electric field. It does not change with time (0Hz frequency.) ...
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2answers
99 views

Avoid voltage peak / static discharge freezing arduino

I am building a speed-testing stand for electric wheelchairs with an arduino nano + rotary encoder. The wheelchair is put on cable caddies, which turn the rotary encoders via a belt. The setup itself ...
0
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1answer
76 views

Styrofoam cooler/chest ok for electronics project?

I'm building a DIY power supply using 6 server power supplies. I've been looking for a case/enclosure to hold them and the necessary wiring and came across a styrofoam cooler that's the perfect size ...
0
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1answer
62 views

What is the safest way to remove dust from electonic devices?

As dust inevitably settles on electronic devices such as televisions, laptops, computers and the like, what is the safest way to remove these both internally and externally? The definition of safe ...
3
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2answers
205 views

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 ...
2
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1answer
858 views

Charge capacitor with static electricity

Can i charge a capacitor fully with only static electricity? I already took a look at: Electrostatically charging a capacitor and How to charge a capacitor with static electricity? but i'm not sure ...
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1answer
123 views

How is this copper showpiece making static electricity

I'm trying to make a showpiece which generate static electricity just like in this YouTube video LINK Does it have Tesla Coil (Slayer Exciter) inside it or Negative Ion Generator?
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1answer
128 views

Insulating from static electricity

I am happy to announce that my pocket extra-strong static electricity generator project is now complete and works well. However there is one problem, I am often getting zapped severely (to the extent ...
1
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1answer
102 views

Can Static Electricity change the voltage reference of a PCB?

Problem: After running a test that creates static electricity, the values acquired by a hall-effect sensor are not correct anymore. Context: The device I am working on draws and rolls up fishing ...
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1answer
78 views

why dont we just use ion wind flowing through evacuated pipes?

Why dont we just use ion wind flowing through evacuated pipes? I ask this because if we reduced the atmospheric pressure in the pipes somewhat, and made them out of a cheap yet durable insulating ...
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6answers
1k views

What transformer I should use for negative ion ionizers

If I want to create a device that produces high static electricity fields, such as negative ion generators, what kind of transformer specs I should look for? I want super huge static electricity, and ...
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0answers
38 views

Charge distribution/movement in an insulator

The way I understand it, net charge in a conductor spreads out evenly over the surface, while for a charged insulating object, the charge will tend to stay clustered around the spot where it was ...
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1answer
44 views

Radio Noise from Storm

I drove through a Wyoming thunderstorm today. Just for fun, I set my AM car radio to the top end of the AM broadcast band where there was no station audible. Sure enough, I heard the lightning ...
2
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1answer
2k views

How to charge a capacitor with static electricity?

I want to charge a capacitor using static electricity generated by me (walking on carpet etc.) and try power a small LED or if that doesn’t work a reading on the voltmeter would be fine (it’s for a ...
0
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1answer
77 views

Could sliding down a slide damage my camera? [closed]

Specifically one of those plastic spiral slides - I was at the playground with my children yesterday and when we went down the slide there was enough static generated to stick our hair on end. Of ...
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0answers
423 views

Easily available alternative to anti static bags

I want to pack some electronic components, but I don't have an anti static bag. Are there any easily available materials that can be used instead. Any frugal tricks ?? Thanks in advance.
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1answer
2k views

Discharging static electricity touching chassis macbook pro?

I was following some instructions from Apple here about changing RAM memories in a macbook pro laptop when I had a question. In these instructions, step 3 tells specifically "Touch a metal surface ...
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2answers
1k views

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 ...
3
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1answer
4k views

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: ...
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2answers
1k views

My oscillator of 40Khz is not giving 40Khz signal at the output

I am putting a 40Khz crystal oscillator with 33Pf load capacitors. The problem I am facing is that as soon as I switch on the circuit, it is not giving me the pulse but as soon as i touch a metal or ...
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3answers
1k views

ESD damage after touching metal PC case?

When i'm tribocharged and then discharge to a graphics card, i can kill that device. Let's say i'm at -2000V, compared to my motherboard, and i touch the metal traces around the board's screw holes. ...
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5answers
833 views

Questions on basic ESD safely

Let me first apologize as I know this topic appears to have been discussed extensively yet something isn't clicking for me after researching over many days in stack, google, and youtube! I want to ...
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2answers
7k views

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'...
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1answer
1k views

Avoiding ESD on a new Graphics Card?

Would it make sense to connect the GND pins of an 8-pin PCIe power connector to a common point ground (which is at earth potential) and then plug that dummy connector into my new GFX card, before ...
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2answers
656 views

Static electricity(ESD)damage for a PCB,immediate or gradual? [closed]

Accidentaly touched PCB of motherboard,so if it got damaged by esd would it boot?
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1answer
110 views

Resistor near point-of-contact for better ESD-protection?

This question is about ESD-protection while installing/removing components (RAM, SSDs, etc.) inside a PC. When grounding the GND of an USB-port to earth or to my wrist strap (as advised earlier) the ...
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5answers
5k views

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 ...
0
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1answer
188 views

Anti-static home setup

As suggested in an answer to an earlier question of mine, bonding to a laptop can be done by connecting an anti-static wrist strap to the ground of an USB-port. (After disconnecting the AC-to-DC ...
3
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1answer
2k views

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.
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2answers
351 views

Conductive paint for ESD protection

Will conductive paint applied to the inside of an ABS case prevent the case from getting electrically charged? It was suggested to me to use a conductive plastic enclosure to prevent triboelectric ...
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1answer
224 views

Static shielding bag instead of a anti-static worksurface mat?

A typical static shielding bag has a surface resistance of +/-10E11 ohm, inside surface and outside surface. Let's say there's a DDR3 module inside a static shielding bag in such a way that all the ...
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4answers
7k views

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 ...
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3answers
7k views

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?
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1answer
911 views

Metal anti-static wrist band better than fabric wrist strap?

Anti-static wrist straps come in 2 flavours: fabric strap or metal band. A metal band is more expensive, but is it better? Or is it just for cleanrooms? The fabric strap is attached to a little metal ...
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6answers
2k views

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 ...
0
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1answer
295 views

How to build a copy of the Franklin's bell

I read that Benjamin Franklin built the Franklin's bell using a long vertical rod connected to one bell, and another one connected to another bell and then going in the ground. I did build a Franklin'...
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1answer
310 views

When shipping electronic components, can I reduce static by using dryer sheets or sprays?

Can I use dryer sheets, or anti-static spray on polyurethane foam to reduce static between the foam and the polypropylene container the foam is in? I need to ship some ESD sensitive electronics ...
3
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1answer
2k views

How to protect electronics from static electricity during shipping

I have some electronics (EDIT: electronics are in enclosures, but with lots of wires coming out of the enclosures; the electronics are a part of a prototype) with ESD sensitive components I need to ...