High Voltage Capacitor Charger

[@tobi_n]

I don't know whether I missed it, but you should mention that these charged capacitors could be deadly to people due to the large amount of energy stored in them. Please be careful not to touch the contacts.

[@cia3653]

Tobi N. anyone who's here knows that so no point 🤷🏻‍♂️

[@tobi_n]

@@cia3653 IMHO these videos are appealing to electronics beginners because they are well made and more or less easy to reproduce. And I can imagine that it is not obvious for such a person that a simple capacitor converts a system powered by 7V which is equivalent to an electric cattle fence into a death trap. If the system would be powered by mains voltage I would expect some respect from beginners because possible dangers are more obvious. But that's just my 2 cents.

[@imranakhtar4478]

Capacitors are dangerous due to low internal resistance, not due to energy stored in them. The largest capacitors shown in video may have less energy than any AA size cell but it can discharge all of that stored energy in a very short period.

[@tobi_n]

@@imranakhtar4478 OK, I apologize for not being 100% accurate. So I summarize: the stored energy by itself is not enough to claim that something is dangerous But a low internal resistance is by itself is neither (c.f. electric fence -> high voltage, low resistance but not really dangerous). The rule is: It's the power that grills you :-) I.e. you need a high voltage and a low internal resistance to generate a high current with the body in series. In addition you need enough stored energy to maintain the current until the dumped amount of power has a damaging effect on the human body. I hope the explanation is complete now.

[@inductor1.77]

If you can build a mazzilli flyback driver, have a disassembled flyback core and own high voltage capacitors to charge, theres a pretty good chance you know enough to be safe around a 600v cap

[@Berghiker]

I built this driver circuit many years ago and it is perfect for a jacobs ladder. Nice thick red fiery arcs like you see at power station short circuits. Used it with 2 x 12V car batteries in series. 24V

[@Berghiker]

I built the same ZVS driver circuit a few years ago and it worked extremely well. I got some nice fat hot orange arcs on my jacobs ladder that I built. It also worked very well with the induction heater too.

[@TitiProsopel]

the idea of ​​the high spark instead of the hub is a great idea. One that doesn't hold the button, but the other estr that is even quieter ... at what explosion it makes, the sound is very strong ... Anyway, your videos helped me a lot to understand some theories ...

[@T2D.SteveArcs]

Hi Ludic the output from, ZVS is a sign wave so you don't need an air gap in the core you only need a gap if its being driven single ended (flyback) that is where the transistor turns on and the core is magnetised the core stores the energy and only transfers it to the secondary when the transistor turns off in a flyback topology power supply the output rectifier diodes are reverse biased when the transistor is on and forward (conducting) when its off that is why its called a fly back excellent vids thank you keep up the good work Steve

[@ludicscience]

Thanks I will try without the gap

[@incxxxx]

If you want to be easily understood, do not forget about dots and commas.

[@Basement-Science]

If you remove the gap it changes the inductance of your coils and therefore the frequency this circuit will run on. Just something to consider.

[@marcino8318]

I noticed you connected diodes in series to - I believe - increase reverse voltage. This simple configuration has a drawback: any mismatch of reverse current will cause uneven distribution of reverse voltage which may cause cascading failure. Normally an equalizing resistors are added parallel to diodes.

[@superdau]

Damn, that thing can be quite deadly actually (the charger as well as the charged capacitors).

[@omprakashtiwari9492]

Sir your explanation is so simple any one can understand thank lot

[@T2D.SteveArcs]

It would be nice to use a resistive divider and feed a small sample of the output voltage into a comarator so you could make it automatic just set max voltage and use a fet to drive a normally closed relay (that way should the fet fail short it would be stuck switched off) have the relay break the Vcc to the ZVS

[@ludicscience]

Good idea

[@JJLonz]

That is exactly how I built mine for a coilgun :)

[@Berghiker]

Also made an induction heater with it and it worked very well.

[@marknorth1221]

Be nice with a built in analog volt meter. Be good to see the cap discharge too

[@TechnoW1zard]

Great but please make additional video for how to safely remove the charged capacitors and connect them to another circuit

[@ericsandro]

I have a big doubt, could make a video about my question, which is: Every receiver is also actually a transmitter, but of lower intensity (power) than the actual transmitter itself ??? Explaining: Whether in the transmitter and the receiver, we know that each one uses its own tank circuit (in inductor and capacitor configuration). So I believe that regardless of the signal, I mean when it comes to the carrier wave, we know that a RECEIVER also uses, in its electronic scheme, the tank circuit (coil and capacitor) to oscillate and thereby suck in resonance. frequency of adjustment by the frequency characteristics of the emitted transmitting wave. And that's where my doubt comes in: I think the RECEIVER should also transmit waves because of the tank circuit, but with low power. Thus there would be the resonance meeting between transmitter and receiver, in which there will already be in the path between the two, as an example, a mechanical system of a balance: Where the person who pushes with his arms (would be the transmitter) and the swing itself (would be the receiver) and both need to be in sync with the commuting, let's say, so that there is resonance and with that there will be signal absorption by the receiver, and then a transistor on the receiver output amplifies so that the power is audible. I hope I could explain it well. I would love to know if this is what happens ??? If you understand me. Grateful I await a return.

[@nigel-matthews]

Very interesting, especially your high voltage bridge rectifier.

[@maliknaveedislam]

I have a question to ask, for 48v, 3Kw DC motor I wanna make a backup capacitors pack, when I switch from one line of electricity to another, in that moment I need capacitance for few seconds,I don’t want to stop motor during switching, for that purpose how many caps, how many capacitors in pack required?

[@nigel-matthews]

@@maliknaveedislam rather that making a system to fill that couple second gap, I'd focus on making that gap as small as possible. Use a double pole, double throw switch and wire it so that when you move the switch position it immediately shifts to the other power source. Just my thoughts.

[@adamtyler6746]

Could you go over how you calculated the turns you needed for the transformer?

[@coucouj2781]

Hello LS, Can you please explain why the transformer winding requires isolation between layers? I thought magnet wire is already isolated with enamel. Thanks.

[@maliknaveedislam]

I have a question to ask, for 48v, 3Kw DC motor I wanna make a backup capacitors pack, when I switch from one line of electricity to another, in that moment I need capacitance for few seconds,I don’t want to stop motor during switching, for that purpose how many caps, how many capacitors in pack required?

[@MrWasim100100]

nice circuit ! can we test capacitor leakage current using ammeter? with this circuit

[@Berghiker]

My coil was also home made and had 850 turns.

[@Berghiker]

Did you have some fun discharging the capacitor? Should have included that in the video.

[@Achilles3366]

Will this work if I use 3v batteries? Or does it only works with ac power? (How do I charge capacitors with dc power and transformer?)

[@nattsurfaren]

I could hear a high pitch sound while you charged the capacitor. What is that?

[@ludicscience]

Vibration from the core

[@Okayy1924]

where can buy capacitor?

[@Buzzhumma]

Danger mr Robinson

[@hackerbrain1073]

i was expecting you that you will discharge the capacitor with screwdriver and show us big sparks❇❇⚡⚡

[@ludicscience]

😎

[@hackerbrain1073]

@@ludicscience ⚡⚡⚡

[@LexLuther-sf3zm]

Why not just use the flyback that you took the core from. Than all you need is a light ballast to power it

[@ken2391]

Can you let us know the max current seen when you began charging the 450 volt capacitor?

[@ludicscience]

4.5 amps but was limited by my power supply

[@shankar0015]

good and informative

[@cisarvialpando7412]

The diode you used is 1N4007. These diodes are not applicable in high frequency applications. So how the diodes did not get damage and malfunction ??

[@ludicscience]

1n4007 can work up to 15 khz

[@cisarvialpando7412]

@@ludicscience thanks for the info...😀

[@TitiProsopel]

I have 100uf 400v capacitors and I would like them to charge faster. Do you think that if I put a multiplier at the output of the high voltage transformer, do you think it will charge faster? the joke is made 3 capacitors in series after which I have 4 rows placed in parallel ... I would like it to charge much faster so I ask you ...

[@ludicscience]

it Will not Charge faster with a multiplier

[@TitiProsopel]

@@ludicscience then I will have to use capacitors with the same voltage but to have as few microfarads as few ... Seriously the voltage increases, the microfarads decrease ... I thought that if I make a multiplier with 20kv ceramic capacitors and 16kv diodes about 2 steps about 40 kv I said it can load faster ...

[@manla8397]

I am thinking of coil gun. 1/2mv^2= 1/2CV^2.

[@Itsimrana]

Its not ludic science its lunatic science 🤪

[@stevenchiverton48]

couldent understand what gauge he said the transformer was

[@sa8die]

this is so good, thanks!

[@ludicscience]

👍

[@robertkat]

That is all old. Been done in all CRTs, all TVs Tube monitors. They had 40 to 50 kv. Nobody died from them. All you have is puny little Hv supply!

[@navistawebuser452]

If you want to you watched and understood need to sometimes write some figures. Do you want to be understood by everyone?

[@Berghiker]

I also made my own PC board which looks much better than your one from JLB. Better design.

[@albin6382]

You have an accent.

[@ludicscience]

you cant trust me

[@albin6382]

@@ludicscience I am confused, can i trust you or not? xD