Making a Spark-Gap Transmitter
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- čas přidán 26. 03. 2020
- This could help if you are stranded with some wires and car parts!
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By: Mehdi Sadaghdar
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#SparkGap #Transmitter - Věda a technologie
Hello BOOMers, there are debates on that my circuit which has capacitor parallel to high voltage source is worse than the other type I also showed at 0:02 which has spark gap parallel to the high voltage source, because DiodesGoneWild mentions it here: czcams.com/video/wSp1IzmRUk8/video.html
While the purpose of this video was not to make a proper commercial transmitter, because FOR GOD'S SAKE, WHO BOTHERS MAKING A COMMERCIAL SPARK-GAP TRANSMITTER NOWADAYS... both circuits lack many components that could make them better, both would work fine with proper components and both have pros and cons. Like in my circuit high voltage resonance frequency is right across the transformer and although mostly filtered, could stress the transformer to some extent, while if the spark gap is across transformer, it could short the high voltage for extended period of time overheating the transformer. In either case having a larger series inductor to the output of the transformer could protect it better. But WHO CARES?! Both circuits work for demonstration purposes, and need improvement for commercial use. So don't go selling this junk to make money!!
I have achieved 1st comment!
Whats that......... Oh no one cares
I wish my brain was as big as yours :(
Make a spark gap ferrite core tesla coil
Ok boomer
ElectroBOOM search for "ok boomer"
His neighbours are wondering why their wifi keeps cutting out.
He would need a resonance frequency around 2.4 GHz to interfere with most residential wifi. So about 1700x the frequency.
@@Uejji Not quite, a little thing called harmonic interference. That is signals generated at the multiples of the primary resonance frequency... Now each one is half the power of the previous but still. Spark gap transmitters are generally not legal in most jurisdictions without special permissions for this reason. They are very good at creating very wideband interference.
And lights keep blinking all the time
@@EwanMarshall this is why I think doing this experiment at home could run you into some legal issues. IIRC the FCC doesn't allow spark-gap transmitters because of the harmonic interference
And that's how you commit a federal crime as a CZcamsr
If we ever raid Area 51 again, remember to look for the computer with unedited audio files that have Mehdi swearing without bleeps
Command accepted...
@@rabbit3704 wth does that have to do with this
the dark phantom it’s Peter Rabbit 2
@@rabbit3704 Don't You Think We Knew This Already?
Aiger Akabane idk
Mehdi :"kill me kill me kill me "
Electricity :"I'm trying I'm trying I'm trying "
GCFI: '' Not happening as long as im around''
@@fidelcatsro6948 electricity provider: not happening as long as im not around
Lol
Believe me, he isn't human, he is Frankenstein
Wtf 🤣
The fact that this guy knows how to hurt himself without killing himself proves how smart he actually is
Lmfaooo I guess you could say that except for the time he was celebrating 1M subs and made Jacob's ladder out of 28 inch sparklers and it got too top heavy and came down on him and he caught it with both hands and he would've cooked to death if the alligator clips weren't alligator clips but rather soldered together wires it wouldn't have disconnected like it did with the alligator clips and he narrowly escaped death. It was gnarly lol
He's mentioned that many of his shocks or explosions are either faked or exaggerated for comedic purposes pplbut yes the Jacob's ladder was not faked and he was in actual danger. You can tell by his reaction and how he refers to that as one of his moments of actual danger.
@@r4ng3k03r1 that "sentence" is so painful to read
exactly
Lol
FCC: "Which frequency are you transmitting on?"
E.B.: "Yeah".
Haa, all of them that are possible.
What is FCC?
@@niko5008 Federal Communications Commission
Had the exact same thought.
@@grassroot011 Why are all of them possible? I'm kinda confused sry
Government: "stay home for public safety."
Government after watching Mehdi: "we were wrong"
lol
At least Mehdi did not construct an extended wave guide and rooftop feed horn driven by the powerful Magnetron antenna inside his (DANGEROUS - MODIFIED) microwave oven. Glad he's smart enough not to transmit (line-of-sight, FM modulation), featuring the sound of his voice saying, "Full Wave Rectifier".
He ya 🤣
LMAO 😂😂😂🤣🤣🤣
@@RandomUserr_ Well i don't. Care to tell?
14:52 he actually wrote SOS in morse code.
... _ _ _ ...
Yeah, he litterally said help me after it
14:52
Wow
Lol
When he said • • • _ _ _ • • •
I felt that
Sos
Wait maybe that was a cry for help?
Like that TV that was arbitrarily sending out SOS and had a handful of three-letter agency individuals come over and askd if any one was in distress.
@@imark7777777 no, it's only a joke for the video
Lol
ooo---ooo
"H e l p m e"
(here's the timestamp 14:52)
"Which ham radio band do you transmit on?"
"All of them"
Yes
"At the same time!"
LoL got a good laugh out of that... only because it’s so true.
Noice mask
funny!
Alternate title: "how to upset all of the Amateur radio operators in you city"
Yeah, isn't it illegal to build a spark-gap transmitter, or something?
lol yeah since 1934 i think
@@valdecoxib wow really? Do they mean for actual like HAM radio operation or for something like this
LMAO 😂
The reason they aren't legal to build is that spark-gap transmitters are incredibly broadband. They tend to generate a lot of harmonics that tend to cause interference.
There's a good reason vacuum tubes became ubiquitous for radio transmission in the 1920s, and unlike their spark-gap predecessors, tube-based transmitters continue to be legal to this day. Because most amateur radio transmitters using tube finals have a pi or pi-L network on the output for impedance matching, they tend to be quite clean.
11:48 That stronger "oooumppff" got me cracking :D
Same
Lol
You sure rang my bell! I was 12 years old when behind the RCA tv and repair store, I found a tuning coil from a tv. I had a morse code toy and took the keyer off it. I also had found a rca 22 volt battery in the trash and really did not know anything about what I was going to do. So I hooked the battery up to one side of the coil and the other side to the keyer. I mounted the coil on the top of a small cardboard box and the battery went in side it. I could not know if I was transmitting anything or not. But just enjoyed doing it and had an idea I was putting the battery power into the coil. And because the code box made noise I guess I was expected a tone. But I did get a small click from it. But when I went with mom and dad to the store, I took it with me. But everytime I keyed it up, it would wipe out the car radio. Boy did dad get mad when he figured out what was going on!
I imagine one day I see in the news:
*Iranian immigrant causes nationwide power surge caused by "Homemade EMP" connected to local power plant*
U are killing me :'DDDD
More like Iranian immigrant teaches people how to burn out RF circuits on everyday items: WiFi routers, electronic parking meters, garage doors, automobile remote locks, etc.
His own expensive Kesight scope sitting a foot away!
How will it be on the news if the EMP shuts everything down?
@@scottlaw1525 newspapers
FCC monitor guy: "I'm picking up some idiot with a spark gap transmitter!"
*CRTC, he's in Canada
Wait, thats illegal
glasslinger = idiot
Tempest Tempest Nah, you're the idiot since you seem to have no clue who glasslinger is - just look what Ron (glasslinger) does on his channel: Making home made tubes (even a magnetron) for example..
CRTC "We seem to have discovered a new numbers station!" 😋
The fact that I could understand everything in this video makes me so happy beyond belief. I’m just starting my communications module next week and this video has sparked my interest. Thank you 🙏!!
sparked
Earth: "hey look we can transmit invisible signals through EMF"
Aliens whose visible spectrum is larger than ours: "What the fuck is going on on Earth"
aliens be thinking earth on a permanent rave
Lol
Lol
Oh wow I never considered that aspect, that's actually fascinating to think about.
Hey Medhi, when BluePrint and I did our spark gap radio video last year - I found that in order to transmit outside, even with a radiated power of 20W broad spectrum, FCC denied me clearance. USA FCC is incredibly strict. Long story short, we had to do our tests indoors. But I managed to get clean transmissions close to 100 feet away when I tested underground in a parking garage, and never got the chance to do a full power test outdoors! Spark gap radio is really cool. Nice video!
You earned my subscription. Very informative and cool channel!
But how they check if anyone transmitting or not
@@taufeeqkhan2629 the signals are always monitored and can be tracked to a location
Right, but everybody knows that the correct way to deal with the FCC is to do it first and ask forgiveness later.
Ragnii TKS Do they triangulate?
11:16 that scream is the real pain
omg
Ikk
Zilowa lmao I did exactly what he did but with a calculated voltage of around 2,400 (I think) volts DC. Holy shit did that hurt
I love your old school tech. I got interested after reading a book in my school library in the 70s aged 12. I got hold of a bunch of ex-ministry of defence components. Massive capacitors, valves, resistors, inductors and all sorts. These all got connected together with PP9 batteries. The number of times I shocked myself belies the fact I'm still alive today. I was also interested in photography. I decided the best way to photograph a spark was using long exposure on my 110 camera and a 5000microF capacitor discharging through a 240/12V transformer in reverse. First attempts not good. I needed dark. So I put the whole lot under my bed. Camera on long exposure. In those days, beds were horse-hair or something. Suffice to say, the spark was massive. So was the fire on the undeside of my bed.
now i can finally sabotage my neighbours wifi
Mehdi: Plugs in/turn on something
Nothing explodes
Me: (Visible confusion)
1:06 "Don't put your finger close to a stun gun when it's running" he says
He's sherlock holmes
BRUH
NO S@£! SHERLOCK
Reminds me in the mid 70's as a teenager building a spark transmitter using a relay wired to make it buzz and using an old sound output transformer. When connected to a 45 metre long wire antenna it would transmit for several miles on nearly all frequencies at the same time, it could even be picked up by TV's in the UK UHF band where the screen would be covered in white random lines and the sound go crackly regardless of channel. My neighbours used to call out the TV engineers with great regularity usually blaming their TV sets, all they had to do was ask me when I wasn't out on my bike with my transistor radio doing signal checks.
Thank you so much for explaining this in such a simple way! Seriously, I could take engineering classes at a university that couldn't help me learn electronic circuits and functions like this.
15:10 “which you should be right now”
"typical Iranian day-to-day life" LOL so true.
wow really? tell me more about it, its so sad. But I laughed out loud too
@@FIFIx30 yea, virtually everyone in Iran uses VPNs for day-to-day internet usage because many sites are blocked
@@FIFIx30 also many websites and services are blocked by the US sanctions. We are block from ether side so having VPN is mandatory. Some times I wonder the government it's self sells these VPN services to gather some budget. Our lives are funny from many aspects.
@@MacHotmale ：０００
as an iranian i can confirm
1:06, 11:16 AWWWWW SH**!!! 😂
7:17 the hell ha ha. 0 after all this.
9:32, 10:40 Scope sound
12:03 Goody
14:55 Help me.
11:45 the stronger OOHMF
11:48
😂😂😂😂
😂 😂
hhhhhhhhhhhhhh
1:06 had me laughing so hard
Lol
Mehdi: *drops whiteboard*
Me: *giggles like a child*
That one was unscripted!
Your Morse capability is enough encryption. Nobody can read it ;-)
I can. I send and receive at 15 words per minute
Nice to see you here
@@adammiranda8073 s ssd yay s the game
Well at least I know the US military after Afghanistan reinitiated the program of teaching it after the Taliban started using it when they figured out nobody knew how to work it.
@@adammiranda8073 is this a hobby or do people still use it?
I wish this man never dies I don’t wanna fall back into depression :(
Lol
I like how you presented the concepts of inductance and LC resonance in a very hands-on and understandable way. I used to play a lot which such circuits. Nowadays, I work as an RF engineer for some years at a medium-sized company, and unfortunately, a lot of applicants at our company have literally no idea what LC resonance actually is, even though they apparently have studied electrical engineering. (At least my job is secure for the foreseable future)
this video should be renamed "how to piss off your neighborhood hams"
legend says that if you run a sparkgap transmitter for 1 day straight the FCC will come and beat you with tire irons
good old days
thanks European conformity.
that'll really help keep me safe.
Not sure it is FCC in canada, but another name for this, is a wideband interference creator....
Ewan Marshall depends on whether the signal reaches the USA... surely Canada has something similar.
Translation of "wide band interference generator": AM Band Jamming
11:15 I think that was rare case of GENUINE surprise electro-boom. Most spoofs and fibs are well-thought and executed skits (and one of reasons I love Mehdi!), but this one and the one where whole installation fell on him while razing sparks and bolts all over the place is where I cannot find any proof of him making things up. His reaction is also unusually strong! I'd Love Mehdi to make at least one presentation HOW he is planning his skit electroshocks, how he is taking safe measures etc. but at the other hand I'd rather not see it; as they say, true magicians never show how their magic is made!
That scream is real.
：000
I love the guest appearance from ElectroCUTE here (the last "OW!" in the segment); it really drives home how surprised they both were.
@@petersage5157 umm... what? Look at Mehdi's mouth, it was him who said that.
WOW! So much good information in one video...practical and that can be used to make something real. In these moments I am proud to be a Patreon supporter! :) thank you so much!!
As an amateur radio operator, I appreciate this video.
11:16 that's the loudest he's ever screamed😂😂
🤣🤣🤣🤣🤣🤣🤣
Watch the video Electroboom mustache
True, that's the loudest I've heard from him. Must have hurt him badly.
i think the microwave transformer jacobs ladder was louder
HE DOES NOT DO IT HIMSELF.DO YOU KNOW HOW MUCH WOULD IT HURT!?
I feel like I’m going to get accidentally electrocuted just watching you.
lol
💢💢 I loved this experiment!!! I'm an ex-Ham radio operator General Class and followed the calculations. You have some mighty nice electronic instruments! And when you poured salt water into the Leyden Jar, I finally understood how it worked as a capacitor. The wire that you dangled from the top acted like a "brush" into the brine which acted as the second plate! I'm thrilled to have watched this experiment. Fritz 💢💢
Mate, one of the best videos you ever made. I could learn tons.
Mehdi:
Yay Sparky fun
Every Amateur Radio operator in the world:
I felt a great disturbance in the Force, as if millions of voices suddenly cried out in terror and were suddenly silenced. I fear something terrible has happened.
hahah soo true :P
Mehdi: Fun spark gaps! Look how cool guys!
Every Canadian ham working 100mhz: AAAAAAAAAAAAAAAAAAAAAAAAAAA
@@Aquatarkus96 thats the fm band
Mike Sierra again? QRM
Ahahaaa. made ny day!!
11:15 God damit literally thought you was dead after that scream
Might have been the loudest so far
@@d_9696 lol
Thank u sooooo much explaining why the inductor doesn’t affect the resonance of the tank circuit! I’ve been searching for weeks for that explanation!
3:24 i don't know why but i laughed so hard :D
Lol
i respect a man that even in quarantine he finds a way to communicate with us!
For the sake of your sanity, don't ever try to calculate how long uploading this video to CZcams would take over that spark radio link, encoded in Morse...
Attila Asztalos, seriously, how long is it?
Millions of years. Just a guess.
@@AttilaAsztalos You don't have to encode it in Morse, just transmit it as binary.
@@AttilaAsztalos SD 4 month
Hd 3 years
4k half life 8
Why the hell are there so many views but barely any likes. This man spends so much time teaching his knowledge for free for others. My man deserves more likes fellas. I appreciate you videos ElectroBOOM, thank you for all of your fun teachings.
11:16 ouch you really feel the pain in that scream
Lol
"And i will use the outlet earth to connect it to groud"
Sheeet, here we go again
I still cannot accept that he did NOT make some short circuit with the mains wiring this time
@@Kalvinjj What was I actually thinking while watching the vid
I thought the ground connector was harmless though. I mean, styropyro plugs his grounding strap in there every time.
come on, you know you want to r/whooosh me
Knock, knock!
Who is there?
Its the FCC! For the love of god, stop what you are doing. :)
Canada
LOL, yep he is Canadian, But I think spark gap generators were banned many years ago.
HAMS HATE HIM!
can you tell me what FCC is and what its task?
Shahriar, did you pick up his shenanigans in your lab or do you watch his videos nontheless? 😁
I have no business at all with electrical engineering yet this is one of the few channels I love to keep going back to watch the videos.
this is the best youtube channel ever !! Big Entertaiment and soooo many knowledge !! Big respect !!!
Imagine rescue helicopters in his windows after he transmitted the SOS call...
That wasn't an "SOS". That was an "S" followed by an "O" followed by an "S". The distress signal does not use inter-character gaps. The nine elements are sent as a single symbol.
@@netfoot It was close enough. He wasn't transmitting long enough to be likely to have gotten a visit.
@@jonc4403it doesn't conform to SOLAS
11:16
I think that might’ve been the loudest he’s screamed
LOL. He yelled so loud that he sounded like a cat yelling. 🤣
What are eardrums
Got him so good he lost his accent for a second.
This is your best video thanks mr.electric.
Thank you for these fun informative videos. Your content is great and funny. It’s almost impossible to not watch the whole video
As a ham radio operator, stay the hell out of my neighborhood. LOL We have enough to deal with with all those cheap switching mode power supplies out there. A long time fan....
Cheap LED lighting is the worst in this regard... I'm running the LED lights in my lab off a 24V power-one linear supply just to shut them up.
@@H-77 just use incandescent
This was back in the socket 7 motherboard days. My dad used to complain all the time how noisy that AT power supply was 🤣
"in a what stronger measure will the electricity be released?"
mehdi:" a much stronger OOOOMPFF!"
Then we could have the micro oompff, the kilo ooompff and so on.
Lol
thankyou , i never truly understood how wireless tech works now you have given me the best explanation possible
ElectroBoom, You probably know this already. The circuit at 7:36 can be used as an AC voltage dividor. Measure the voltage across the inductor and use it and the current to find the reactance of the inductor , and which is like the effective AC resistance = voltage / current. Use that value in the reactance of an inductor formula and solve for the inductance. I have used this concept to find the value of a capacitor using a 1000 hz sine wave from the earphone output of a computer, and a voltage meter.
I have a laser, audio circuit posted that I made if people want to make one.
I would’ve loved to have you as one of my professors when I was in school!
Please keep uploading such videos frequently. This could really help during the quarantine period. A knowledgeable quarantine 😄
and fun
Nice job explaining Ham Radio - maybe some of the viewers will get interested in it and join the fun.
I avoided this video a while but it was absolutely the greatest overview ever!
This is why I admire Engineers very much. First an idea, then a few cryptic equations and a pen, paper, and calculator, next thing you know you're transmitting stuff across the room and probably confusing the heck out of passing birds coming back from migration... =D
Please debunk the 5G myths, it’s getting out of hand now
yeah man so true
The virus be like: Alexa, play Christopher Cross - Sailing
5g myths need to be RECTIFIED immediately
5g caused the Holocaust and 911 and you cant change my mind
Big Clive has done a vid on the subject.
One of your best. Thanks
I made one of those tasers back in high school using the same coil and relay setup. Pretty fun!!!
11:48 ...in a stronger *OOMF*
You have brilliantly condensed 5 years of electronic engineering in a 15 minute video.
I was working on an ignition Killswitch on the 25 hp two-stroke boat , I had the same alligator clips on the output wire from the stater I got mixed in the voltage coming out of the motor and with grounded to the boat which left me with a heckuva shock for a good 10 seconds
Even the advertisements of your sponsors are funny on your videos! Congratulations man, i really admire you (greetings from Brazil).
Thank you for clearly explaining some of the concepts that my ham radio license says I am supposed to already know.
And for demonstrating the operation of equipment that my ham radio license says is illegal to operate.
@@netfoot He's not modulating anything. If what you say is true then every person or university that does a DIY Tesla coil is breaking the law as well.
@@Aquatarkus96 He set up a receiver and transmitted (what he thought was) the international distress signal using A1A modulation; Signalling by keying the carrier directly, a.k.a. Continuous Wave (CW) or On-Off Keying (OOK).
11:15 I can see his soul departing from him.
did your mobile burn
Not as bad as his homade electric guitar
1:00 I was expected that 😂😂😂😂
Thankyou that was wonderful!
At 11:16 ohh god...by his scream...I can understand ...how high voltage he got😅😅😅
"typical iranian day-to-day life"
yeah, that's how we're watching you on youtube XD
I was building one of these when you published this video.
That was one hell of a learning curve.
I wish I would have delayed 3 months and let you do all the work:)
You have great knowledge sir🙏🏻
1:11 sirens in the back
THEY’RE ONTO YOU!
Your How To Make A Taser video is my favorite video from you. I even rewatched 3-4 times yesterday.
Why can't I comprehend these simple explanations? I can grasp most other areas of science, even quantum physics, but electrical engineering and circuit diagrams just go easy over my head, regardless of how simply it is explained!
Loved this ... thank you Mehdi !
11:15 that was the most intense ouch I've heard of him so far
14:30 Guglelmo Marconi transmitting the first signal across his garden
Yes, but Nicola Tesla received Marconi's signals with his apparatus (and were sure to hear transmissions sent by intelligent aliens). So who invented the radio? No doubt, . . . both!
@@thempletonaart159 and then there is some russian who did it earlier but with different setup
Thank you friend, I always enjoy your videos. Keep up the good job!
Excellent way of explaining critical principles. Thank you. I liked it.
Great video, Mehdi! Spark gap xmitters are awesome, the very first radios along with xtal sets. This helped to save 705 people aboard the Titanic. It was used extensively in WWI and got to be quite advanced, tunable, etc. Valves quickly replaced all spark equipment, but it was still in use into the early 1920s. The Titanic's Marconi system was one of the most advanced and powerful at the time, I think upwards of 5KW of power. Every spark emits a radio frequency... turn on an AM radio and hear the noise from a light switch, an appliance running, even distant lightning during a storm.
We not gonna talk about the ghost that showed up in the reflection of his gold play button at 16:03
Holy Frick
Nice eye
Who you gonna call? Captain Disillusion!
WTF
Probably his wife
This guy us much better than my loda lassun physics teacher, he has taught me much more than that teacher could teach in an entire year. Thank you.
So much knowledge just went in my head
I love this video. It's like he just looked at his back shelf and figured "Spring Cleaning! What can I do with this stuff?!"
Incoming replies "how come comment is 18 hours old when video is 30 minutes old???"
@@purpleapple4052 answer for those people:"they are sponsors"
Another great video! You sent a distress signal just like a real Marconi operator!
Very fun and informative!
useful ! thank you so much sir !
1:05
when the bug you are showing your cousins bites you
😂😂😂 True XD
lol
11:16*
Man that capacitor shock looked like it hurt. Reminds me when my electronics teacher use to throw charge caps at us if we weren't paying attention
@Arvid Lee Here, 10 uf 400v caps.
@Arvid Lee catch!
🤣🤣🤣🤣... You better not
Hey. Nice paddle technique. That was pretty much spot on 10 words per minute CW. Or Morse code. I love getting on 80 meters with CW. 👍
You are making my Day so much better!