Understanding the Functionality of a Wireless ESD Antistatic Wristband with a 1 MOhm Resistor

Hello!
I bought an anti-static wristband on the Allegro - wireless (I decided that I would not have to connect anywhere and it would be more convenient).
It came, and I turned it on out of curiosity - there is only a 1 MOhm resistor inside.
I don't understand how it "works" and whether it works at all, since it only consists of a resistor.
If someone had contact with such "wireless" bands, I would ask for an explanation as to how this resistor should collect "charges from the whole body in 15s, and then everything that is induced in 0.1s".
I can also attach photos if it helps.

PS I do not know if I chose the right department, but it seemed to be the only right one - please transfer it if it is inappropriate and I apologize in advance.

Greetings to everyone!


Wireless wristband.

Quote:

Description:
This device neutralizes more than 80% of the static ions on the human body. It retains the potential of the human body, i.e. 150v, thus protecting electronic components. It allows for unrestricted movement, which improves work efficiency. Helps to protect ESD components against the risks posed by visitors and controllers.
Attention:
After putting it on the wrist, the band will neutralize electrostatic charges all over the body within 15 seconds.

The description comes from the website: "http://www.tsam.com.pl/pl/page/31/Cleanroom/sub/118/AKCESORIA/p/69/OPASKI_NA_PIETY_I_NADGARSTKI", accessed on 12/11/2013

Another trick of people.
Yes, the electrostatic charge is dangerous, because under special conditions it can have a value of several kV.
The charge on the human body accumulates, in dry conditions, we are well insulated from the earth potential, there are conditions that favor the formation of electrostatic tensions ...
No wireless wristband with a "resistor" will take this charge from the body.

Such a "wireless" wristband can only function by ionizing the surrounding air, which then ceases to be an insulator and conducts electricity (ie, discharges charges).
Without (strong ionization!) It does not work.
And with ionization, it can be carcinogenic, it can cause leukemia, genetic changes, and infertility.
Read: http://www.ciop.pl/14302.html.
By the way, check if it glows in the dark. If does not shine , that's all bright : LIME TREE!

Well, I guess I let myself be fooled.

I took photos showing the construction.
There is a screw on the top that touches "a piece of undefined material", it appears to be a conductive rubber-like substance with one resistor electrode wrapped around it and the other electrode underneath a metal field (see the fourth photo) .

In my opinion, the only way to ground yourself is to attach the cable to the top screw and end it with a crocodile clip to connect to the ground - then it will work as a standard band.

I thought that this "secret box" on the wristband would be hiding some clever chip that draws a super low current at high voltage - but I was wrong.

How is it with branded wristbands? (this one is Chinese). I saw that more expensive wristbands are produced, including wireless - are they also such a fake? - they also have "clever, magic boxes".

I might as well walk around with a large resistor and hold it by both electrodes :)

Regards!




All photos posted above are by me.

Hello.
I have carefully reviewed all the photos and come to the conclusion that this is a cable tie, sold without a cable. Hence its wirelessness. The screw was to discharge the load. Hence the statement:

Folxs wrote:

In my opinion, the only way to ground yourself is to attach the wire to the top screw and end it with a crocodile clip to connect to the ground - then it will work as a standard band

it is absolutely true.
By the way, make a deal

Folxs wrote:

"secret box"

to be able to discharge anything, it would have to be supplied with the potential difference (voltage definition), and in this situation it has only one pole connected.

Well, this is not a cable tie, because they are constructed differently - they do not have a "secret box" but a clip for attaching the cable.

This is probably a PLACEBO band, or some magic forces of "rubber-like magic substance" are at work here :)

There are also such "wireless" wristbands from another manufacturer, they are maroon-brown and I wonder if they only have a resistor in the "box".

______________________________________
I have read, I have read - it turns out that:
There are those with a microcontroller and an LED diode inside, mounted on a metal bracelet, they are also without a uC, consisting only of a resistor and a screw - and this is to work without the principle of air ionization, as my colleague wrote above Rzuuf .

There are also publications and studies which show that there is nothing more effective than a wired wristband, although it's better than no wireless one.

When searching for materials in google, please follow the slogan "cordless wrist strap" (English wikipedia and ESD Journal are the sources on which I base my statement):
http://en.wikipedia.org/wiki/Antistatic_wrist_strap [accessed on November 13, 2013]
http://www.esdjournal.com/techpapr/sfowler/wireless.htm [accessed on November 13, 2013]

Folxs wrote:

Well, this is not a cable tie, because they are constructed differently - they do not have a "secret box" but a clip for attaching the cable.

You admit that removing the drain cord from the package does not make it a wireless wristband yet? She simply does not fulfill her function without him.

By joining the topic. You have an idea how to easily remove the load from yourself and from, for example, a computer case without a wristband. I have contact with them a lot and will kick a little once in a while. I think you could touch the grounding in the socket, but not everyone has it.

rafalfilipkowski wrote:

You have an idea how to easily remove the load without a wristband

- of course!
Spray your clothes, shoes and the floor around you (including the floor covering) with a water-based salt solution with glycerin. Calcium chloride CaCl2 is most preferred as the salt, it is hygroscopic (does not dry out).
If you do not trust such a method, there are ready-made antistatic sprays available on the market
(https://www.google.pl/#q=spray+antystatic).

Nonsense like little If these charges were to be carried out wirelessly, the band would not be needed at all :)

In my company, people have similar bands, but they connect with a cable to the banana socket located on the edge of the desk, and from there the cable goes further to the grounding installation. If the wireless bands worked, nobody would connect themselves with cables

Hello, maybe someone is still out there. I don't know if he writes in the right place but it's worth trying. I started working in a plant where plastic products are manufactured. Unfortunately, all the elements coming out of the injection molding machine are copied .. I read that the best are the cable ties but I have nowhere to plug in .. I also looked for electrostatic gloves but I do not know if they work. Please help somehow not to kick; (

In my opinion, the load is on the plastic and it flows down through you to the ground. You have to take it off something from this item. As for the connection - where you need to connect (electric socket would be the best place - then make a "wand" out of the wire and touch the element with it to get rid of the charge)

There is no need to look for an outlet. The injection molding machine is metal and all metal housing parts SHOULD be grounded. It remains to make a brush from thin wires, connect it to the metal part of the injection molding machine and "magic" stroking each detail before touching it with your hand.

You bought a wristband incomplete, without a cord. The merchant, "honestly" called the product "wireless".


Regards, sympathetic.
PS Or maybe now the anti-static sanitary pads are sold separately?

januszx3, note that the "wireless" ones have a different box - first of all.
secondly, not to the point because we already have that one behind us.

pinczus56 - gloves - especially insulating - should eliminate the "kicking" effect, but who would want to wear rubber on their hands all day long. You can try an electrostatic wrist strap - connected to any grounded element in the area; you can try ESD footwear (or just a test the strap inserted into a regular shoe) - it's hard to feel what will help.
And it's best to talk to the health and safety worker in the plant

Today I spoke to the coordinator. He said that you have to get used to it ... the grounding has only 3 injection molding machines .. and there is no time to play with a soft toy or a rozdzka because the mold cools down or the elements come out of the machine so quickly that I will be buried in one moment ... in fact, rubber gloves give something to try and so all day I walk with gloves in which my hands are chafing.

Try an ionizer. There are blowers available that blow ionized air and somehow discharge electrostatic charges.

pinczus56 wrote:

Only 3 injection molding machines have grounding ..

How on earth did the other machines get picked up if they aren't grounded ??? If there is a breakdown and voltage is on the casing, you will notice it only when someone is already lying on the ground !!!