ow it is never fun to be on the business
end of an unexpected shock from a door handle ah light switch or
masochistic electrical engineer as many of you know this is called
electrostatic discharge or ESD and it can happen when two differently charged
objects are brought close enough together to overcome the insulating
properties of the air between them it takes a discharge of at least 2 000
Volts for us to feel a zap but as little as a hundred volts could potentially
damage sensitive Electronics that's where these come in anti-static
wristbands are designed to prevent this buildup of static on your body but if
you've seen more than a handful of our videos you'll know that we're pretty lacks about actually using them because
being tethered is kind of annoying there's a solution for that this
actually bees Wireless anti-static
wristbands are supposed to keep you grounded without connecting to the
ground it sounds too good to be true which is
why we asked Medi from electroboom to
help us find out if these really work I'm here to help Linus yeah last time
I'm here to test lines I mean
not test him test with him whatever he wants to test a little this is the roll
the clip okay
don't worry I won't feel a thing and you
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video description
you might already know this but the way these conventional anti-static
wristbands work is pretty simple the inside of the cuff has conductive
threads woven into the elastic which are physically connected through the Buckle
to the snap on the outside with the cord snapped on and attached to ground
there's a direct path to discharge any
static charge that would normally build upon my body and a resistor in the cord
protects you in case you accidentally come in contact with up to 240 volts by
limiting the current to 0.5 milliamps but
how do we know they actually work how can we test them
before we get to our wireless options Let's test the traditional wired bands
and make sure that we know what we're looking for there are a couple of things you're going to need a multimeter and an
electro boom intuitively I would think a device
that's designed to discharge static electricity would just be a wire
essentially but when we do a continuity test on this
there isn't meaning that no current is
passing is my understanding Uh current is passing but it's so little the
continuity doesn't show it continuity is made to test ShortCircuit pretty much
right or very low resistances but right this guy has around one Mega ohmm of
resistance in it which we can probably check with that to see if it's there I
see okay well can we verify that yeah I guess we
press and check the ohm and yeah
let's see oh one Mega ohm exactly wow good job I fix it to two decimal places
your resistor is exactly what you say it is we briefly touched on why the
resistor is there it's to protect you from high voltage but why on Earth would
I ever encounter high voltage when I'm wearing an ESD strap well the thing is
that if we are working on electronics and accidentally touch live wires for
example you don't want your body to be shorter to ground otherwise there will
be a ton of current going through you and the one Mega ohm resistance in there
is there to limit the current through your body got it so this is just in case
I screw up not in case the laptop that
I'm repairing something happens yeah well at the same time the electrostatic
on your body is so small that one Mega ohm although it sounds too big it is
enough to quickly dissipate the electrostatic hold on a second what
you're saying then to quote There's Something About Mary is there's a chance
out back to our conventional one for a
second though we've already measured that the strap works but how do we know
that the contact with me is good can we measure that well actually from what I
understand even this strap even this band has a little bit of conductivity I
mean everything is conductive for high voltage anyways so there is some stuff
in there that even when I touch that my body loses charge how do we test it
though oh we test it by charging you up with this thing which yes puts enough
charge on your body and we can see if the charge goes away with that okay all
right theoretically I am protected from your Contraption right now right
do that well that was a long Arc that was nice
but we don't want to use this do we you want to use this one fine one thing is
that stuff I make are not made for production so hopefully it won't fail if
it does fail I hope it at least fails in an entertaining manner that I can count
on with you yeah
okay it's alive it's really antsy
now you can bring the back of your hand close to this thing and feel the charge
whoa you get it good yeah
okay so it's working then the the pantyhose is working
there you go okay all right but how do
we build up a charge on me then so should I be oh God should I be
touching that because we're trying to demo that the
ESD strap makes it so that I can safely be rubbing my feet around on the carpet
and work on my computer right sure yeah okay well uh don't touch the computer
first how much is it gonna hurt to touch that
like if I touch it constantly and when you go close to it it hurts at some
point you can't you can't put your hand on it okay that's really not encouraging
the way here ow so I have to do it on
purpose and then hold it there right yeah
why do we collab with this guy
because it's fun
okay how fragile is it like can I just like
go in there it's not made for production I already said that you're gonna destroy
it just slightly touch it
okay you can do it I believe in you
I'm sweating right now I'm sweating okay
damn it okay
ah I can feel it I can feel it from here it just aren't to me from that far away
okay
there you go there you are oh yes yes
okay now your body is picking up charge
from that right and then if you touch your computer your computer is grounded
right okay
there is no discharge this ESD wristband works perfectly the
initial discharge was high voltage low current right yes but then now that I'm
touching it you said the voltage stays very low maybe close to zero even okay
but whatever it is whatever voltage it's at it's very little current right and
it's going through my ARM through my wrist strap through this
cable and then into the ground into this doodad that we have plugged in
that means this is all safe I could handle Electronics all day get me
something expensive okay like this laptop this is fine what I'm doing right
now right uh you better not disconnect your wristband
from ground now because your laptop is not connected to the ground if you
disconnect your wristband right now your body and the laptop will pick up charge
when you put your laptop on the ground there will be a huge discharge killing
your laptop in the process okay so take this before I take out the
which means as long as the strap Works everything is good
however
okay you should you should stand on some plastic or so you can stand on that it's
solid so that you actually pick up charge
no Works
let's say instead of a pantyhose running through a motor right I'm walking around
on a carpet and then I'm standing still for let's give it a solid one two three
four five steamboats I go and touch my
computer ah and the hair stands on it my head there
you go actually did your hair stand up when you were talking about it yeah I could feel
it back here you probably couldn't see it but I could feel it now do you want
to try the same thing with my magic wand that is more powerful I mean not really
but I did so that's the way out here this looks like it does all kinds of
interesting things yeah well I mean I wiped it this morning
so you can use it it had some suit on it just don't put it
in your mouth right burn marks and stuff so what have you done here this is a
flashlight right yeah I bought a flashlight at some Home Depot yeah and I took the guts out
and put my own Electronics in it pretty
much and what is all of this are you
stepping up the voltage or what are you doing here there's something here that
makes what like eight to ten thousand volts ac and this is like a network of
capacitor and diodes that yeah steps it up to over a hundred thousand volts
it's it's not electrostatic discharge level even in the
standards you test up to 20 kilowatts so
100 kilowatt might be an Overkill but more fun
can you just explain something to me real quick here I saw you take the cells
out of this earlier they're just standard 3.7 volt lithium whatever so
you but you you pointed at this and said blah blah blah something AC something
yes okay can you explain that or is this an inverter of some sort or it is a
circuit called a zvs it's basically an
oscillator and a Transformer that increases the voltage of that oscillator
the oscillator makes like uh three times
eight 24 volts and then that 24 volt AC is Amplified through the Transformer to
let's say 10 000 volts yeah and the 10 000 volts every step goes up to it's
like 15 there so it should make 150 000 volts or something so you said your
story keeps changing sir you said a hundred thousand now you say 150 what
are you gonna hit me with I'm gonna hit you with this well the
thing is that yeah no the high voltage runs like you can turn it on don't point
it at any of your devices just point it towards the ground or something and just
turn it on you will hear the electricity going out of it
I don't want to turn it on well don't point it to your face you'll be fine
here and my face too
there you go that that that's the sound of electrons jumping out of the tip of
it so explain to me what's happening there because we talk about static
arcing through the insulating properties of the air right yes
but this just jumps into the air what is it jumping to
oh yeah I mean the voltage is so high that uh it pretty much tears the charges
away from the air and it just charges go
like how can we I mean it's even
lightning right has to go Arc to
something yeah but I mean that's what's happening with the lightning the charges
start going go and until they say you
reach a ground they create a channel that is ionized and then the whole thing
goes through yes I see so this is basically pre-lightning so like if I
pointed at you at a distance you will feel the wind coming of it out of it it
creates a wind when I want to feel that actually
nor do I I mean as long as you are from
a distance you feel anything yet well maybe you should be
connected to ground ground yourself man should I yeah because that way more
charges you know more charges come toward you and and maybe I touch my the
ground as well do you feel anything whoa is it coming good
so that's the wind I was talking about the charges are running away from it and
you know it ionizes the air to the same charge that is on the tip of that and
they try to get away from each other because they are the same charges and it
creates a win
point you stand on that thing or do you want to show that actually
that what are you standing on yeah sure it's a milk crate because everyone on my
crew and everyone who comes to visit likes emasculating me
and hold this uh
touch a ground with it basically touch the tip to a ground okay
um and turn it on disconnect it from the
ground and then turn it off
so turn it on now yeah keep it on or you can already hear you
discharging to something don't have your hand too close to that thing
wait am I charged now a little bit I can
hear you the charges are running away from you oh yeah you were to
wow now I am charged damn it
wait why am I charged
well this handle is ground of this thing and that side is the output high voltage
whatever is it a negative or positive I don't remember but yeah so so it it is
change it's moving the charges from your body to the ground so you get charged so
charge yourself so what whoa
whoa holy this ground wire
did you see the actually like oh do you want me do I
have to hold the button I only pressed it yeah if you press it once it charges
you to some extent that wire like
attracted to me
yes don't let that wire get too close to your part okay okay and what are we
testing now what was the point of this so now that you're charged you can let
go of the ground there so just yeah now you're completely
floating charged okay without a strap and now with that if you touch any
Electronics you will discharge to it and here you can touch your computer now
probably well I heard it
there you go okay so what do I do what do I attach it to I touch it to not
yourself okay so now I can put this down
that's why you're already discharged far gone there's nothing okay
it works yes strap wired strap Works
which means that even though Maddie and I showed last time that ESD discharge
onto a computer component won't necessarily kill it immediately
um we know that companies like Intel AMD
NASA for that matter follow these safety
protocols because particularly during manufacturing these components can be
more susceptible to this kind of damage and that's why the industry has
standards for what these protections are supposed to look like for example this
little guy right here from Desco whoops is a validation tool for making sure
that your ESD strap is working without needing one of these though thank you
very much whatever all you have to do is
plug it into the wall then plug in your anti-static strap either directly or
through an extension like this that you can then clip onto your ESD safe
workspace and then all you need to do is
touch this right here and it says test good that means that the resistance of
your ESD strap is between 850 000 ohms
and I think what was it about eight Mega ohms or something like that which is the
NC standard with all of that in mind no
I mean my way is more efficient quicker and it's a little cheaper for yeah it is
actually cheaper this thing is shockingly expensive and not useful for
testing all types of anti-static straps but with the magic wand let's talk about
these if you don't have a wire coming
off of it to plug into your ESD tester
how can you validate if it is working correctly that's where the magic one
comes in that's what I'm talking about this is this baby is good yeah that's
actually the reason this collab got off the ground because we were trying to
figure out how on Earth to either validate or debunk these things yeah
what is our test the test is you wear that you charge
yourself you charge discharge I mean you touch an electrical component or
whatever and see if you survive that's the test basically no I'm making you do
a test too though
no I think I've suffered more than you today one of us is gonna do the bro
anti-static and the other is going to do the made in Japan Live Strong bracelet
which one do you want does it even matter for sure I'll go with the anime
one
oh this is stupid what is in this piece of plastic even it
looks like there's some little metal like uh like kind of frag like dust or
powder or something in there it looks more like glitter really looks
like a joke bro he's on bro
okay does it have to be that one what about that one that one doesn't look as
threatening we learn by pain but wait wait wait hold
on hold on because this is not realistic so we're not really giving this a fair
Shake unless we give it a more realistic
charge right well I mean yeah sure because that I mean that even managed to
zap me through this thing right
oh fine I'm trying to see if your hair is rising
or not no not too bad are you charged at all oh yes your charge good
I mean spoiler but um
ah
it did discharge okay hey you have The Wristband on you so you should be fine
yeah damn it just do ah okay
good okay you can turn it off now I can feel the hair Rising on my ARM
good raising excuse me now your body has
theoretically this is helping I'm gonna give it like five more seconds to
dissipate into the thing into this house
don't come closer oh that's not a good sign
ah not a single electron left your body it
seems through that thing at least if you have other pointy Parts on your body you
could probably run okay well let's see if yours works oh you could have started with your hand on it
there you go it's done I don't have any hair to raise on my head so
okay I mean that seems probably pretty good okay now we let the
country of Japan do its magic I can hear him from here
oh it's it's my wires see oh it's his
his lav wire is grabbing the table yeah
it's like it's touching those wires that's where you are hearing it thank
God they have some insulation on them ready
okay ready oh
that was a lot even even you touching my
butt didn't discharge it oh I didn't touch I just got close and it was just
it was leaping across I felt something leaving me so
yeah so yeah there you go the Japanese wristband Wireless wristband was is it
still worth testing with this one uh sure okay
oh okay let's do it all right let me
move this thing away who knows maybe it'll work even better with higher voltage
whoa I can feel myself powering up I held it for a couple seconds don't put
it down you may discharge yourself to something oh I see
selected oh did you catch that spark
David I bet the editor will have it
let me see if I whoa I won't touch you what if I'm close to you I need to do
that why ah probably you'll feel something
what are you doing what are you doing why are you doing
this
but we are going to both her my hair's standing up oh yeah
we should have a video of your hair that is raised and as soon as you touch it
drops to zero yeah just okay
yeah shake your oh there you go yeah yeah yeah it went up this time yeah
okay all right your turn your turn I don't
have hair though team Japan no you don't have to do the hair thing I just want to see if the Japanese one works better
okay fine so-called made in Japan
it's still there I feel it Japan come on
ready no
okay
so what is their claim with these things
should we take it apart and see what's going on here I didn't I really like to
see what is in these Japanese things with this glitter bar at the bottom okay
so we'll use this one on the made in Japan thing to get it apart and then in
the meantime oh yes I also have we got you one of these already right well oh
yeah bunch of them actually yeah oh good good good good how do I open it without
damaging the fancy
yeah but it's so complicated if I open it like that we are gonna damage it
and like people will say ah
no it's just like the plastic yeah it's
just discoloring from being stretched okay let me cut maybe more section
without cutting myself maybe wait that's it
it's just molded silicone it's pretty on
your hand I guess what I mean uh what is
it conductive maybe maybe we can use your multimeter to see if there is any
conductivity inside of it at all or on the surface or whatever sure uh yeah why
don't we do that first then and then we'll open this one up after okay so
show me how we how do we test that say between the here and there is there
any conductivity overload nothing oh okay so basically
the resistance is very high then what if I get very close
no there's nothing well I mean this thing is probably goes to gigahomes and
it's not seeing anything and nothing inside too it does go to Giga one giga
ohm yeah so this this is just glitter
embedded in silicone then oh this is the package germanium titanium
oh what shower okay it's okay for shop it's
oh you can wear it in the bathroom well when taking a shower this guy has it
around his neck we we have to connect the handle of this thing to one side and
the top of this thing to the other side and see if it jumps between the whole
thing or not oh I see we just need a
piece of wire I guess I have some stuff okay so theoretically what happens when
I press the button now well if those glitter are conductive it might jump you
might see an arc or something I can see anything it's going but it's
not arcing maybe you can get closer and closer at
some point it may jump I think it's just jumping directly going
through the air that Glitter is not titanium germanium
worse than air basically it's worse than
air it doesn't even bother going through the Restland yet it's worth noting in
all of the discussion of BS Wireless ESD wristbands that even wired ones are not
necessarily within spec this one for example is not to spec not because you
won't be able to dissipate any electrostatic buildup on your body but
because it is conductive inside to out meaning that in the event you were to
accidentally rest your wrist against something that had a current flowing
through it you could easily cause a short and yeah I mean I I just wanted to
say that that's true because even with my wedding ring I accidentally touched
some power lines and blew up some stuff so you definitely don't want that around
you now let's take a look at the Bro the
Bro may actually be the less snake oil of the two and there is a resistor
connected on one side to I suppose the
metal underneath and on the other side it's just floating no it is not
connected to the metal underneath
for God segment what was that they just
oh my God pour some Electronics sprinkle
it in a box and say it's electrostatic discharge protector garbage oh my God
it's not it's not even adhesive-backed it is just wait oh you know what no the
screw must be connected to that side oh yeah and then there's a resistor and
then it just goes to a little bit a little piece of rubber what's the value
of this resistor though you can see my old eyes yeah I can take a picture there
you go there's a brown black and green
means one Mega ohm oh okay yeah you can
probably check it with your meter oh yeah let's do that I mean for all we
know this could be not even a real resistor maybe they burned it first and
then put it in there yeah it could be defective resistor or it's a magic resistor the value doesn't matter
yeah yeah I mean not as tight tolerances
that oh actions that is yeah that's pretty good it's nice okay so I guess
with the person of this wristband what do you get a one Mega Ohm resistor
a box you can hold your mega resistors
in good components yeah yeah and it's so
convenient because you can you can wear all the all the resistors that you need
and they're just they're right there you just open it and soldering
yeah it's it's convenient uh holder for
your res components yeah and this is a convenient segue to our sponsor eight
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if you guys enjoyed this video the obvious one to go check out is the last
time we collab there's actually two videos there's one on our Channel
there's one on electrobooms channel both of them are awesome two kind of
different perspectives on the The Challenge which was our attempt to kill
components with an ESD discharge gun now
how did that gun compare to this thing well that one was regulated
to be the least this is not I mean if your device survives this then you are
passing everything with flying colors okay