High Voltage Induction Launcher 

scr sounds like a clever idea! I know of alot of scr from china having fake ratings

thx

@@HyperspacePirate I am a RU-vid expert 👀, this channel is going to blow up soon, please just remember me. My crystal balls are telling me that Oct-Nov 2022 or Feb-April 2023 is your time to shine.

@@phumgwatenagala6606 He had one video that got over a million views (and another one with more than 500k I think). It's weird how the rest of the videos still have ~10k views and his channel overal is still small. It's definitely good and deserves more subscribers! If I could buy futures (or a call option) on this channel's subs, I would :p

@@xntumrfo9ivrnwf subs and average views is a better indicator of channel performance rather than going off a fluke video… people can get millions of views on a short but all their other content has only a fraction of views with a fraction of subscribers. One or two highly viewed videos doesn’t mean the channel is successful.

Yeah, it would. I used the sawed-off transformer because it was what I had readily available

I'd say whatever core you put in there, it will saturate, given the very high current densities. Also, adding iron increases self-inductance, making the coil "slower". Perhaps the ring has already left the coil while current is not yet at its maximum? I think it's a complicated optimization :) (I tried to optimize this once)

@@HyperspacePirate What Is Islam? Islam is not just another religion. It is the same message preached by Moses, Jesus and Abraham. Islam literally means ‘submission to God’ and it teaches us to have a direct relationship with God. It reminds us that since God created us, no one should be worshipped except God alone. It also teaches that God is nothing like a human being or like anything that we can imagine. The concept of God is summarized in the Quran as: { “Say, He is God, the One. God, the Absolute. He does not give birth, nor was He born, and there is nothing like Him.”} (Quran 112:1-4) Becoming a Muslim is not turning your back to Jesus. Rather it’s going back to the original teachings of Jesus and obeying him

@@ahmdabdallah5811stop bringing religion into this

sort of. take a neon sign transformer. theyre wound at the ratio to give 15kv, but are only very loosely coupled, they have a lossy core. this means that OPEN CIRCUIT, they make 15kv... but when they are running across the arc of a neon sign, they drop... sag... right down... to only 15V or so. at 30mA. or 60mA, depending. thats all the neon tube needs to remain conductive, but it needed the 15kv to ignite in the first place. a microwave oven is designed to give 1.2kv or whatever into the load presented by the magnetron and circuitry. its about reflected impedances. the power supply, the wall, has "zero impedance". its only limit is the wires, the fuses... if you short it, instead of the voltage sagging, theres so much power it just blasts current and blows everything. when people go on about amps or volts that kill... its the POWER dissipated in a resistance. the heat it produces. a transformer reflects at the square of the turns ratio. at 1:1, it reflects the load, and thats what the supply sees. you can make it so it limits the current by poor magnetic coupling, otherwise... old welding transformers and large regulators had cores in them that moved dependent on the current to maintain constant voltages etc... a stick transformer welder still uses an adjustable core to vary the current. turns ratio stays the same, magnetic coupling affects power transfer. if it steps DOWN, to a lower voltage, then the resistance of the secondary appears higher to the source. if it steps UP... then the resistance of the load, teh secondary circuit, is reflected as a lower value, and can flow more current because of it. put a single turn into a microwave oven transformer, and the resistance of the load, YOU, or the short... is reflected back at 1: say, 3000 turns... square that... the supply sees say, 90K, and that limits the power that can flow. even with the 0.001R of the secondary winding itself, only so much power can flow through its reflected resistance. the power point is NOT an infinite source of power, but has its own limitations, of course... just because theres a huge step down ratio doesnt mean a huge current can flow! there has to be a voltage to drive that current through a resistance. when it steps UP, that all reverses. the load reflects as LESS resistance, and now its simply the windings, their ability to take current, the transformer design, that limits the power that can flow. if you short a MOT, it reflects back as thousands of times LESS... and the current goes out the roof! its tricky at first. pretty simple when you think about it.

Simplicity is the key to make things happen for a many. Nice fella. @@paradiselost9946

Microwave transformers are incredibly dangerous but you don't understand what you are talking about. They run at different duty cycle depending on the heat of the microwave. They are dangerous because they can make lots of current like 1amp at high voltage and low frequency. Plus in this project he is only using the primary so it has no such risks as no high voltage is involved.

Thank you for clearing that up Samuel. Peace and have a Happy New Year too. Hopefully many more for me and you to come. 😀😀@@samueldavies646

The more voltage you use the less turns you need.

What do you mean by trigger the zvs?

If it can produce an arc it works

I think that particular part number went obsolete. Searching on DigiKey, looks like a suitable substitute would be VS-60EPS16-M3, which is rated for 1600V and 950A peak

@@HyperspacePirate thanks so much for the quick answer!

I've thought about this a few times. It could be possible to use the aluminum structure of a rocket for eddy currents to push it along with an electromagnetic pulse. Not sure how that'd compare to a mechanical catapult, though. As cool as electromagnetic induction / ferromagnetic attraction is for propulsion, it's really really inefficient

@@HyperspacePirate if going hybrid launch, you'd want to shed the weight when your done with electromagnetic phase of a launch. Well designed 3 phase Induction motors can do fairly well at converting electrical energy to mechanical. It is a little bit more challenging to do it as efficient with a linear induction motor, but it is used in levitating trains. Imagine a three phase induction ring launcher with an iron rod in the center and sets of 3 coils wound on it. with a larger rocket The metal must be thick enough that it can carry sufficient current, and the induced current's magnetic field restricts further penetration of the changing original magnetic field. Efficiency? I don't know, but I strongly suspect it is significantly more efficient than producing the chemicals and the effective efficiency of thrust. Have you seen the motor I made on my channel?

@@kreynolds1123 I suspect what you'd end up with is something similar to the sabot used in the US navy railgun that breaks away once the round leaves the barrel

@@HyperspacePirate I was envisioning more traditional launch lugs seen on model rockets. But they'd be a wider diameter, and ideally detachable shortly after lift off. The point is, if rockets are their least efficient when going slow at take off, en.m.wikipedia.org/wiki/Rocket#Energy_efficiency , then getting them started with a linear induction motor make the chemical part of the launch overall more efficient, or allow a reasonably significant amount of weight reduction in the chemical motors. On a large scale, I see potential structural issues using induction launch lugs for a significant portion of the initial launch acceleration. But maybe not so bad that they couldn't be worked out.

I looked into this a little while back when I was researching static charge built up on the human body. It seems the general rule of thumb is that approximately 1-joule of energy from a static discharge is the threshold for lethality. I can't give you a source off the top of my head, but that's the number i saw several times. The capacitor you're describing would carry 2J of energy, so if it arced across your heart, there's a very good chance it would kill you. However, that situation is relatively easy to avoid. Don't get near/touch charged terminals, and always use an insulated rod with a ground connection to discharge your system before you work on it.

@@HyperspacePirate Thank you very much. What you are saying fits well to what I could find on the internet. A 3d plot with voltage, capacitance and chance of death on the axes would be so nice, but I guess noone has ever aquired data on this topic. The 1-joule rule is good, but not always true. A low voltage cap can have more than 1 joule and may not be deadly, because the energy is not tranfered fast enough trough the human body and the current is too low.

Yes. The continuous current output of the high voltage transformer is extremely small (on the order of milliamps), so it's bottled up in capacitors to give the high current (>1,000A) pulse

@@HyperspacePirate so More 400v caps in parallel would mean even more 'explosion' right?!

@@ThaboW11 Yeah, that's right, although If i got more caps, I'd put them in series to get a higher voltage and lower capacitance so that the LC time constant of the circuit would be smaller and dB/dt would be higher

@@HyperspacePirate Cool.

@@HyperspacePirate but if the capacitor discharges in the coi,l wouldnt it make a resonance circuit? and could it damage the capacitors by charging them in the other polarity because of the colapse of the magnetic field in the coil? and would it be a good idea to put a reverse diode across the capacitor for pulling the negative charging

I couldn't find the file, but I'm going to make a much better one and post the files. This transformer is way below optimal because the turns ratio is too high and the current is low, so it's not well matched to 1200V

Probably not very good as your capacitor won't store much energy as 100kv of capacitors will be very expensive and most of the energy will be lost in an arc even under oil

Never have I read so much BS in a single comment.