hi today we will drive my Tesla coil
magic wand and huge arcs will come out
of it wow just big ARS yeah it is worth
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electroboom more at then anyway I built
this part of the wand in my previous
video which is basically the Transformer
side of a Tesla coil I was debating on
how to drive this thing it will be
running of small batteries so I don't
have huge amount of power to spare but I
can store power over some time and
output it in a huge burst of energy
creating large arcs this made me think
of the original Nicola Tesla's method of
driving it see my buddy Nicola placed a
super high voltage capacitor across the
primary that with the primary inductance
would resonate at the exact same
resonance frequency of the secondary as
I explained in my previous video when
the primary runs at the same resonance
frequency of the secondary the secondary
voltage builds up to super high values
and Arc first we charge our primary side
capacitor to very high levels using an
initial Transformer when the voltage is
high enough an arc will jump across an
air gap we place in our circuit shorting
the capacitor across the primary
inductor the capacitor's energy pours
into the inductor back and forth at
resonance frequency transferring a burst
of energy to secondary enough chitchat
I'll be using the same principle I have
measured the secondary resonance
frequency and the primary inductance
using the formula we will get the
capacitance we need
although I have some good amount of
error in measurement and component
values so I think it's best to just make
the capacitor and try it well in my last
video my primary started melting and
smoking this is
beautiful oh no and I dug into it to see
what's wrong and there's nothing wrong I
had just overloaded it so I'll have to
cover it with epoxy again but for now
whatever I have a bunch of 15,000 Volt 2
nanat capacitors I put Stu them in
parallel like this of course we don't
need to charge the capacitor with high
voltage AC like Tesla did we can charge
it with high voltage DC which I have the
tools for I'll use my original magic one
that can generate over 100,000 volts to
charge my
capacitor and an arc will jump between
the legs when the voltage is high
enough
wow that was a strong see the capacitor
is
so see the capacitor is so
OU
always discharge your capacitors before
handling a
circuit we connect one leg of the
capacitor to one side of the
primary and the end of the secondary is
also connected to the same place and the
distance between the other leg of the
capacitor to the other side of the
primary makes the air gap and now we
charge the the capacitor and when it
discharges we see an arc at the output
[Music]
hopefully there's
nothing oh wait look at this nonsense
when I discharge the
capacitor you see those arcs jumping
from the exposed area of the primary to
somewhere in the middle of the
secondary I have to cover the whole
thing better in
epoxy instead of the magic one I'll be
using my powerful zvs high voltage DC
generator circuit that
generates
it it usually pops up like a popcorn but
anyway these Transformers come with
built-in diodes that Rectify
Transformers super high voltage AC and
can quickly charge up my
capacitors right after I fix this
okay so here's the situation everything
is re epoxied and I have my makeshift
spark gap and capacitors connected to my
high voltage DC generator and if I turn
it on I should expect arcs to jump off
the tip here
but there's nothing
why look at
this you see these massive ARS jumping
even after all the
epoy I want these ARS to be up here but
instead for the love of God it's burning
it seems oh no I should have stopped
that oh sh look at that now the primary
Ark through the epoxy to the secondary
threw there and
burned this is not going to work anymore
oh I have to either throw the whole
thing into garbage or dig the primary
out and do something about it
apparently if you heat epoxy you can
easily cut through it hopefully I can
get the primary out and you'll see from
there that's it I'm pulling it
out
boys and girls the primer is out now we
recover it uh I mean cover it again with
epoxy here you go everything re epoxied
nicely now I'll put the wire right on
top of the epoxy with its jacket on and
hopefully that will insulate properly
first I'll wind it around a pipe with
less radius like this and then hopefully
I can wrap it around that properly like
this I'm testing the jacket with my
other magic one then look at this the
jacket is damaged here have to change
the wire checking to see if this wire
jacket not
broken yeah yeah this one is good okay
let's give this a try let me show you
what we've got
now see now I don't see arcs jumping
anywhere internally but there's nothing
jumping from the top either well there
is some minor energy going out can you
see it ow ow ow ow ow ow ow ow what very
small I have a feeling maybe internally
some Arc is happening that I'm not
seeing it well do you remember I created
some very well isolated ferite core for
my Tesla coil but now I'm thinking maybe
it's not well isolated and is on arcing
around I have to somehow pull it
out okay I can push the ferite core out
from
here it's out although it dropped and
broke but whatever there was nothing
wrong with the ferite core there is no
internal arcing I tried with and without
the ferite core and the arcs are just
tiny the driver transistors blew up and
I had to replace them my treadmill motor
broke down and I'm not getting the arcs
I deserve I mean look at
this do you see anything up there
nothing but it is hitting my hand I can
feel it let me turn off the light can me
look at this do you see the plasma it is
is hitting me right now but you can
probably not see it see ow ow ow ow
there is
something but not big enough to my taste
ow ow my power supply is current
limiting too I don't know if that's a
problem I mean the capacitor is already
charging and discharging so power supply
current limiting shouldn't be an issue
but maybe I should just use a battery to
have constant huge power and see what
happens okay
[Music]
ready let's try again
hello let me remove
this wow look at this much
plasma so
Beauty well I mean oh I mean you feed it
so much power eventually something will
come out of it but it means that for
this Arc I'll have to have this huge
driver circuit and a large battery and
that's not something I can fit into the
handle of a magic wand I was hoping that
charging and discharging a tiny
capacitor into the primary every say 1
second would be enough to create a large
Arc at the output which would be much
simpler to fit into a handle of a magic
wand but no because I wanted this to
look like a magic wand I had to restrict
myself to a certain shape which resulted
in the circuit having tiny capacitors
all over the place which limited the
energy which makes me think can I
increase the capacitances of The Circuit
by placing this top load on top of the
circuit here like this and this results
in a much lower resonance frequency that
means I have to increase the size of
this capacitance so in total I'll have
much more energy stored in capacitors
before they discharge let's try it here
you go a ton more capacitors and running
it off the power supply and we'll see
what happens okay let's
see not much better is
it let's check it with the
battery yeah this is garbage I don't
think I tuned the primary properly let's
just add some
capacitors made it worse less
capacitors ah okay now this is some nice
and large
arcs and it's much more painful than
before too damn it that's what more
energy gets you I guess this was another
failure I mean I did get some nice
plasma and arcs out of the one but the
driver becomes huge these Dimensions
mean small inductances and capacitances
that can hold much less energy I mean
look on a proper Tesla coil the
secondary inductance is
around 60 mli Henry at 100 khz while on
my wand it's only around 1.4 mhenry the
resonance frequency is around 2 MHz
that's much harder to drive to so I
might just abandon this form factor and
roll a fat one to get bigger arcs it
won't look like a proper magic one
though maybe I can find a solution in a
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