Circuit Helper
Circuit Helper
  • Видео 154
  • Просмотров 98 499
Amazing wireless key light with adjustable color temperature and intensity for less than $50!
In this video I show you how to make a wireless key light that allows the cooler temperature and intensity to be varied wirelessly using WLED! It's a simple build that requires only basic electronics skills - though be careful when using mains voltage! The total cost of components is around $50 from Amazon, but can be MUCH lower if ordering from Aliexpress... links for key components are below.
Fotoconic 7" to 11" Soft White Diffuser Sock
amzn.eu/d/dMRSxIO £11.89 (for 2)
www.aliexpress.com/i/1005003992983724.html £4.37
Tripod Mini Ball Head Mount with Removable 1/4" Hot Shoe Adapter amzn.eu/d/36Fvrzv £4.39
VARICART 24V LED Driver 60W LED Power Supply amzn.eu/d/8Gulvkj £13.99
DON'T BUY THIS: Pet...
Просмотров: 48

Видео

Amazing wireless lights that anyone can build - perfect for YouTube beginners.
Просмотров 3443 месяца назад
In this video I show you how to make a cool battery powered RGB light that is controlled over wifi using the free WLED application. The full parts list is included below, but I paid a premium fromAmazon, Aliexpress is where you can find some real bargains!! Dealikee 2 Pack ESP32 ESP-32S Development Board 2.4GHz Dual-Mode WiFi Bluetooth Dual Cores Microcontroller amzn.eu/d/90jCJ3q (£14 for 2) CO...
I made an internet controlled coffee roaster using ESP32 and Arduino IOT! (1000 subscriber special)
Просмотров 9614 месяца назад
In this video I hack a popcorn maker using an ESP32 and Arduino IOT cloud to make a coffee bean roasting machine. The resulting coffee is disgusting, but I learnt a lot and had some fun in the process!
How to generate REALLY HIGH VOLTAGES using just 9 Volts...
Просмотров 4,3 тыс.5 месяцев назад
In this video I take the output from my high voltage switched mode power supply that's powered from a 9 Volt source and couple the output to a voltage multiplier circuit. This generates a high voltage DC signal which I use to charge up a Marx generator....the result is scary, and it breaks my bench power supply :(
COLD PLASMA - From a 9 Volt battery??? (Part 2)
Просмотров 8127 месяцев назад
In this video I build a simple switched mode power supply (designed in the previous video) that's able to convert 9 V from a battery into several thousand volts, sufficent to generate a cold plasma 'jet'.
COLD PLASMA - From a 9 Volt battery??? (Part 1)
Просмотров 5267 месяцев назад
This is the first video of a series that explores how many Volts can we actually generate using a some 9 V PP3 battery. In the video I design a simple switched-mode power supply that I'll use to drive a high voltage transformer capable of generating plasma!
Exam walk through - Part 4.
Просмотров 557 месяцев назад
In this video we work through a past exam paper with questions that cover my entire electrical circuits course. This fourth part focuses on the final question, worth 25 marks, which considers filter circuits and resonance in AC circuits. The full exam contains four questions and is 3 hours in length, so each question should take approximately 45 minutes to complete. To get the most out of the v...
Exam walk through - Part 3.
Просмотров 258 месяцев назад
In this video we work through a past exam paper with questions that cover my entire electrical circuits course. This third part focuses on the third question, worth 25 marks, which takes us on to AC circuits and considers AC waveforms and power in AC circuits. The full exam contains four questions and is 3 hours in length, so each question should take approximately 45 minutes to complete. To ge...
Exam walk through - Part 2.
Просмотров 508 месяцев назад
In this video we work through a past exam paper with questions that cover my entire electrical circuits course. This second part focuses on the second question, worth 25 marks, which takes us back to DC circuits and considers capacitors and amplifiers. The full exam contains four questions and is 3 hours in length, so each question should take approximately 45 minutes to complete. To get the mo...
Exam walk through - Part 1.
Просмотров 568 месяцев назад
In this video we start working through a past exam paper with questions that cover my entire electrical circuits course. This part focuses on the first question, worth 25 marks, which takes us back to DC circuits and considers real voltages sources and nodal analysis. The full exam contains four questions and is 3 hours in length, so each question should take approximately 45 minutes to complet...
14: Real filter circuits - Worked examples.
Просмотров 518 месяцев назад
In this video we explore some typical exam style questions focusing on high and low pass filters. In addition to calculating the necessary component values to create a filter with a desired cut-off frequency, we consider what happens when the necessary components are simply not available - an all too common scenario when designing circuits!
13: Simple tips to create Bode plots
Просмотров 399 месяцев назад
In this video we will cover a set of easy to follow steps that can be used to construct a Bode plot for a simple low-pass filter. We will construct a Bode plot and then compare it to the actual repsonse generated using SPICE.
12: Filter transfer functions
Просмотров 659 месяцев назад
In this video we derive the complex voltage transfer function of an LR low-pass filter. We do this simply by considering Ohm's law applied to a potential divider circuits. We also explore the behaviour of an LR high-pass filter both analytically and using SPICE.
11: Identifying passive filters.
Просмотров 1859 месяцев назад
In this video we consider passive filter circuits, these are crucial elements in many electrical devices. We start by considering how different types of filter can be quickly identified and then we move on to explore the behaviour of a low-pass LR filter both analytically and using SPICE.
10: Power triangles explained!
Просмотров 609 месяцев назад
Understanding power triangles is fundamental to grasping the intricacies of power flow in an AC circuit and its various components. In this video, we explore this concept by drawing a parallel with a glass of beer. By considering the beer's head (foam) and its liquid content, we explore the principles of reactive and dissipated power. To further cement this understanding, we will dissect a real...
09: Real vs Imaginary power explained!
Просмотров 1249 месяцев назад
09: Real vs Imaginary power explained!
08: Power Factor Explained!
Просмотров 11810 месяцев назад
08: Power Factor Explained!
07: Power in Reactive Components Explained. #thecircuithelper
Просмотров 11610 месяцев назад
07: Power in Reactive Components Explained. #thecircuithelper
06: Power in AC circuits Explained. #thecircuithelper
Просмотров 9410 месяцев назад
06: Power in AC circuits Explained. #thecircuithelper
05: Parallel Impedances made Simple!. #thecircuithelper
Просмотров 8110 месяцев назад
05: Parallel Impedances made Simple!. #thecircuithelper
10: Practical guide to understand amplifiers.
Просмотров 14511 месяцев назад
10: Practical guide to understand amplifiers.
09: Charging and Discharging
Просмотров 24911 месяцев назад
09: Charging and Discharging
08: Storing Energy Made Simple!
Просмотров 5811 месяцев назад
08: Storing Energy Made Simple!
AC23: From Oscillations to Shocking High-Voltage: Analysis of Resonant Circuits!
Просмотров 17711 месяцев назад
AC23: From Oscillations to Shocking High-Voltage: Analysis of Resonant Circuits!
AC22: Have you got the Q factor?
Просмотров 86Год назад
AC22: Have you got the Q factor?
AC21: Resonant circuits explained!
Просмотров 129Год назад
AC21: Resonant circuits explained!
AC20: Cascading filters to improve performance!.
Просмотров 108Год назад
AC20: Cascading filters to improve performance!.
A Stroke of Genius: How I Outsmarted Siri and Alexa With A Raspberry Pi And ChatGPT!
Просмотров 3,8 тыс.Год назад
A Stroke of Genius: How I Outsmarted Siri and Alexa With A Raspberry Pi And ChatGPT!
AC19: Comparing idealised and realistic filter responses.
Просмотров 70Год назад
AC19: Comparing idealised and realistic filter responses.
AC18: High pass filters - amplitude and phase response..
Просмотров 126Год назад
AC18: High pass filters - amplitude and phase response..

Комментарии

  • @QUIX4U
    @QUIX4U 10 дней назад

    Or, what he means is. TRY THIS (at home or at work) but use extreme caution, or the zap test. If it goes ZAP, when you poke a screwdriver's shank at it, don't use a finger instead. If nothing happens, don't use a finger in case you didn't short-it correctly, and it still needs to ZAP something dumb.

  • @QUIX4U
    @QUIX4U 10 дней назад

    I find that the EASIEST way to work out what current is flowing, is to simply hang a "clip-on" ammeter across a wire. Bingo - problem solved.

    • @thecircuithelper
      @thecircuithelper 10 дней назад

      Try clipping your probe on to a diagram and see what you measure🤣 But seriously, if you can measure it then that’s always likely to be the best way (as long as it’s safe to do so), but it’s not always an option though. Also most clip on current meters are designed to work at DC/mains frequencies, would need some kind of current probe and oscilloscope to measure other frequencies. Thanks for watching, I’ll hopefully be posting more videos soon!

  • @alejrandom6592
    @alejrandom6592 21 день назад

    I hate fake looking/sounding AI

  • @brendankeane6989
    @brendankeane6989 23 дня назад

    Prefer maths not music. Miss AI

  • @austinbale3289
    @austinbale3289 24 дня назад

    This looks like AI generated

    • @thecircuithelper
      @thecircuithelper 24 дня назад

      No way, she’s as real as you and me!

    • @austinbale3289
      @austinbale3289 24 дня назад

      @@thecircuithelper Gotta escape the Matrix 🙏

  • @GAURAVGUPTA113
    @GAURAVGUPTA113 27 дней назад

  • @jaikrish50
    @jaikrish50 29 дней назад

    Best AI create video

  • @NoNeedtoFeedtheJudge
    @NoNeedtoFeedtheJudge 29 дней назад

    This is horrifying

  • @anton_c8gur
    @anton_c8gur Месяц назад

    it actually fuckin give some short circuit calculations too hahahaha for transformer secondary and i just gave it an transformer 50kva 3 phase with %z of 0.05 lolol

  • @frankiecal3186
    @frankiecal3186 Месяц назад

    You could of probably done that on your phone.🤔

    • @thecircuithelper
      @thecircuithelper Месяц назад

      You could now… but when I made the video the chatgpt app was text only!

    • @frankiecal3186
      @frankiecal3186 Месяц назад

      @thecircuithelper bro some people are making them with ollama and with no internet attached so that the NSA can't spy on you. Super 😎 cool.

    • @thecircuithelper
      @thecircuithelper Месяц назад

      I’ve seen those, that is pretty cool, bit limited at the moment but no doubt will get better!

  • @duongdong5850
    @duongdong5850 Месяц назад

    This is actually helpful! I got very confusing about the Fourier transform, but this video explain it so simple! Keep it up!

  • @manfredm5298
    @manfredm5298 Месяц назад

    👏🏻👏🏻👏🏻👏🏻

  • @lukepurse9042
    @lukepurse9042 Месяц назад

    No.

  • @Stormchoirs
    @Stormchoirs Месяц назад

    Right off the bat you can tell this is AI generated.

  • @sandipansarkar3717
    @sandipansarkar3717 Месяц назад

    Thank you ❤️

  • @muhammadalbani5492
    @muhammadalbani5492 2 месяца назад

    Hi friend, I'm new to programming and I have a NodeMCU ESP8266 that I've never used, can I use it to make a coffee roaster like the one you made? If the answer is yes, will the programming be the same as the one you created?

    • @thecircuithelper
      @thecircuithelper 2 месяца назад

      Should work fine, the programming will be largely the same, there are many examples for PID, PWM and temperature sensors for the ESP8266. I’m not sure the Arduino cloud works with the 8266, you’d have to check, but you could just send the sensor data and control signals via serial or WiFi to a computer. Thanks for watching!!

    • @muhammadalbani5492
      @muhammadalbani5492 2 месяца назад

      @@thecircuithelper okay thanks for the explanation

  • @jamesrushton3368
    @jamesrushton3368 2 месяца назад

    Cheers for the vid, explained it better than my uni lecturer

  • @serg.r4860
    @serg.r4860 2 месяца назад

    Reminds me of a load cell

  • @TpGnnr
    @TpGnnr 2 месяца назад

    Creepy...

  • @tg_2137
    @tg_2137 2 месяца назад

    Man, I really hate these AI videos. This one has me the most uncomfortable of all the ones I’ve seen yet.

  • @thebar6095
    @thebar6095 2 месяца назад

    That is pretty cool! However, it definitely is far too limited. What do you think would be good enough for an AI that is decent at circuit analysis? Maybe just a large language model that is good at doing calculations like the one you asked + one that answers questions about circuits with great knowledge + generates accurate SPICE netlists? You think that would be a good one? Or would it need more features to be actually usable for decent circuit analysis (e.g. you can upload a circuit and it can analyze it)?

    • @thecircuithelper
      @thecircuithelper 2 месяца назад

      Interesting questions… for AI to be truly useful it would need to do more than just analyse a circuit. As experienced electrical engineer can look at a circuit and intuitively know what it does and what’s critical. For example, looking at a real audio amplifier circuit there might be hundreds of components, most have a very minor impact on performance, an experienced engineer can recognise this and focus their analysis on the key parts of the circuit. An AI would need this level of intuition, if not it would simply calculate all the currents and voltages in all the components (i.e decoupling capacitors etc) and you’d be bombarded with information, most of which is not useful. AI might be better at creating circuit designs by adapting existing circuits. For example it could be trained on 100 different amplifier circuits and then you could provide a specific set of operating parameters and it would design an excellent circuit. It shouldn’t be too difficult to achieve this, but it would only ever be able to design circuits it had been trained on. I’m Generating spice netlists is useful, but it would be great if it could make a proper circuit diagram. I’ve tried a few times to get it to do this but it’s basically a joke… just gives a random collection of components stuck together!

    • @thebar6095
      @thebar6095 2 месяца назад

      @thecircuithelper That makes sense. I would think circuit analysis would be useful as well because AI essentially helps do calculations for non-experienced people with electronics. For example, someone who is learning electronics as a hobby can use AI to help them by asking it questions before it makes a circuit for their needs. The AI can maybe help them with calculations as well. I would assume the best AI for everyone would be one that can analyze and discuss a circuit (for beginners) and then create circuits based on parameters (for engineers). It would do this via netlists. As for the schematics, yes AI is notorious for being hard to develop for analyzing images. There is actually a subdivision of AI called Computer Vision which usually requires PhD and extensive experience needed to develop AI models that can analyze images and understand them. Generating images is a whole new world of difficulty as well, especially circuits. That's why making the AI generate accurate diagrams would be a lot heavier task than just netlists.

  • @johnnywintery8608
    @johnnywintery8608 3 месяца назад

    This is cool as hell - definitely building one!

    • @thecircuithelper
      @thecircuithelper 3 месяца назад

      Awesome! Good luck building it, you should have no problems, it’s super easy. If you buy the same LED strip I didn’t (i.e 5V) then just get a USB C breakout board, rather than the power delivery board I used, they’re like 1/10th the cost!

  • @CVaz-Tech
    @CVaz-Tech 3 месяца назад

    Is this considered a PID loop? Just trying to understand proportional gain vs proportional band...

    • @thecircuithelper
      @thecircuithelper 3 месяца назад

      I think this is the wrong video, but the proportional gain is the ratio of a change in the output to a change in the input, while the proportional band gives the total range of the controlled output that can be produced within the controller’s 0% and 100% limits.

  • @Nitro552
    @Nitro552 3 месяца назад

    Great ! Do you use a quartz tube ?

    • @thecircuithelper
      @thecircuithelper 3 месяца назад

      In the video it is quartz, but it doesn’t need to be. When using helium almost any dielectric material will do (normal glass, even the tube from a plastic pen 🤓). This isn’t the case with other gases, Argon is hotter, any glass or ceramic would be fine, maybe not plastic!

    • @Nitro552
      @Nitro552 3 месяца назад

      Thank you ! 😊 I tried a zvs circuit with a flyback, positive inside and negative outside, and it broke the glass, then I tried like you with two rings of nickel around the glass tube, and it broke the glass too. I used argon and argon/co2 (80/20). The only thing that works is with a Tesla coil with positive inside the glass tube, but there is a lot of electric arc, that’s not a smooth flame. I can only drive my Tesla coil at 50khz. Do you have any advices ?

    • @thecircuithelper
      @thecircuithelper 3 месяца назад

      You’ve a few things going against you there! The co2 addition massively increases temperature, you’d probably be fine if you just used argon. Also, the frequency of operation has an impact on temperature, the lower the better, but things compositions is likely to be the bigger factor in your case. Good luck!

    • @Nitro552
      @Nitro552 3 месяца назад

      Thank you ! I bought two quartz tubes to try, and i go back to argon only 😉

    • @thecircuithelper
      @thecircuithelper 3 месяца назад

      Great, good luck with it! Let me know how you get on….

  • @JF17thunder485
    @JF17thunder485 3 месяца назад

    Super explanation

  • @myshticaanimo2169
    @myshticaanimo2169 4 месяца назад

    Many time books just overcomplex simple 1th grade things !

  • @col0342
    @col0342 4 месяца назад

    Time to contact IEFT and reserve HTTP 219 as the standard return code for "I'm a coffee pot"

  • @fehringerc
    @fehringerc 4 месяца назад

    I know nothing about roasting coffee, but you should look into Arduino over-the-air updates (OTA). You only have to program the esp32 once. Then you can upload new code over wifi, so you don't have to plug it back into your computer.

    • @thecircuithelper
      @thecircuithelper 4 месяца назад

      That’s a good suggestion, OTA updates are so convenient, I use them for my coffee machine. Annoyingly, on Arduino cloud the OTA programming feature is something you need to pay for 😡! This is another reason not to use it, but on the flip side, it is easier than trying to setup a web server on the esp32 with web sockets etc…

  • @johnnywintery8608
    @johnnywintery8608 4 месяца назад

    Congrats on reaching 1000 subs, I’ve been watching from the start!! Looking forward to more videos like this, would be really interested to learn more about how to control things using microcontrollers etc….

    • @thecircuithelper
      @thecircuithelper 4 месяца назад

      Awesome, thanks for watching! I have quite a few projects like this on the go at the moment, hopefully get those videos uploaded soon! I’ve also been watching a few videos on how to roast coffee beans, so I’m going to revisit this project in the near future!

  • @vladi1475S
    @vladi1475S 4 месяца назад

    Cool! Now if you use Pi AI (Inflection 2.5) app on your phone and headphones does the same thing. The app is called Pi. But it is very cool what you did with raspberry pi and integrating with chatGPT! I really like it! :) 👍

    • @thecircuithelper
      @thecircuithelper 4 месяца назад

      Interesting, I’ll check it out! It was quite a while ago when I made this video, so there’s probably loads of interesting updates and enhancements to be made, things are developing so quick! Thanks for watching!

    • @vladi1475S
      @vladi1475S 4 месяца назад

      @@thecircuithelper True! Things are going so fast nowadays. But I love your channel and all your content! Thanks to you for making the interesting videos!

  • @user-vp4qn7nq9x
    @user-vp4qn7nq9x 4 месяца назад

    Best intro ever 😂

  • @jb8622
    @jb8622 4 месяца назад

    Calling the Feds. You've gone rogue Circuit Helper

  • @PollosH3rm4nos
    @PollosH3rm4nos 4 месяца назад

    Your explanation of when to convert or not at 17:40 literally saved me. Thanks for the great video 👍

  • @harrymartin1661
    @harrymartin1661 4 месяца назад

    Interesting.

    • @thecircuithelper
      @thecircuithelper 4 месяца назад

      Glad you enjoyed it, thanks for watching!

  • @larryscott3982
    @larryscott3982 4 месяца назад

    Why didn’t he just use longer screws and run them all in from the outside? 9:22

    • @thecircuithelper
      @thecircuithelper 4 месяца назад

      I was hoping to use shorter screws and have them all from the inside, it’s better to have a rounder and smoother surface for consistent breakdown. However, soon realised that was never going to happen as there wasn’t enough space to do it that way! Putting both sides in from outside would have looked better, but it was so tough to screw in/out I didn’t want to change it!

  • @user-vp4qn7nq9x
    @user-vp4qn7nq9x 5 месяцев назад

    Very interesting. I really enjoyed this video. This video really made me want to visit York!!

  • @user-vp4qn7nq9x
    @user-vp4qn7nq9x 5 месяцев назад

    Very good video 👋👌

  • @WiggglezMr
    @WiggglezMr 5 месяцев назад

    Soldering on top of a note book....

    • @thecircuithelper
      @thecircuithelper 5 месяцев назад

      It’s a perfect insulator for both heat and electricity😆

  • @skungpid
    @skungpid 5 месяцев назад

    This is why you use a 12v Lead-acid battery. You'll still get zapped, but at least your power supply won't die. Been there, done that. Still alive.

    • @thecircuithelper
      @thecircuithelper 5 месяцев назад

      This is definitely the way to go, with the addition of a 20 foot copper pipe hammered into the ground to make a decent earth!

    • @jvon3885
      @jvon3885 5 месяцев назад

      And always only touch things with one hand. Speaking of deadly electricity, back in the day I worked in the oilfield as a pumper. Id check condensate tank levels alone and out in the middle of the plains. It's windy, and you often times generate a decent static electric spark. If we didn't ground ourselves when going up the ladder, we could accidentally spark the vapor as we open the hatch. Fun tumes and those sparks are nothing near what this dude will put out lol.

    • @thecircuithelper
      @thecircuithelper 5 месяцев назад

      The idea of a spark igniting oil vapor is scary as hell, at least I didn’t have that to worry about! Thanks for watching!

  • @Pulverrostmannen
    @Pulverrostmannen 5 месяцев назад

    yeah, it is advisable to have a pair of Zener diodes across the output of your power supply when playing with high voltage stuff to help reduce voltage spikes. naturally, Zener values higher than your operating voltage ( pointing towards each other in series and parallell with the output ) Back EMF travels far when voltage is high. The spike can still travel to ground and cause trouble if the power supply is not isolated with a transformer or something like that. sometimes just a transformer with a simple bridge rectifier is the best to use if you are sure your experiment can damage your equipment as it won´t take damage easy and even if it does you probably just need a new rectifier. play safe

    • @thecircuithelper
      @thecircuithelper 5 месяцев назад

      Good idea about the Zener diodes, maybe even a TVS would be a good. I’m pretty sure it was the grounding arrangement that caused my issue, firing the output of the Marx directly into the ground terminal of the dc supply probably wasn’t my brightest idea! Thanks for watching!

    • @Pulverrostmannen
      @Pulverrostmannen 5 месяцев назад

      @@thecircuithelper No problem :) things happen. Even if you think you are safe. Not very long ago a phase to my incoming power to the house blew while my 6KW 400v 3-phase was running it did not immediately stop so the heat pump acted like a generator on the now floating phase and my kitchen light exploded and it completely killed my PlayStation 2 as well. In the PlayStation there was like stupidly rare avalanche diodes that surely don’t exist anymore that was killed along with fuses and stuff. I had to convert the circuit to revive the power supply again by replacing the diodes with a suitable MOV instead and mount a fuse holder and new capacitor. Things sure can cause havoc when you least expect it. But my PlayStation been working perfectly since the incident I could not control

  • @martinkuliza
    @martinkuliza 5 месяцев назад

    1:05 "In other words ... don't try this at home" NO... IN OTHER WORDS............ CRACK OUT YOUR SCOPES AND HAVE FUN LOL

    • @thecircuithelper
      @thecircuithelper 5 месяцев назад

      🤣 seriously though, don’t try this at home!! Thanks for watching!

    • @martinkuliza
      @martinkuliza 5 месяцев назад

      @@thecircuithelper LOL Seriously though.... You know KNOW ONE is going to NOT to that . but..for the official record YOU ARE RELEAVED OF ALL RESPONSIBLITY AND ARE HELD COMPLETELY HARMLESS Now.. Let's crack out our scopes and have some fun :p

  • @nayanjagirdar8408
    @nayanjagirdar8408 5 месяцев назад

    👌👍

  • @hermajestyflore
    @hermajestyflore 5 месяцев назад

    at a 30kv output, ur caps should be fine. Since they are all in series there isn't 30kv across every capacitor. Also thats definently not 30kv. And definently not 120kv at the final output. Seing as the spark was maybe 2cm or something, i would say its 20kv.Also, how did u brake ur PSU?

    • @thecircuithelper
      @thecircuithelper 5 месяцев назад

      I was more worried about the caps in the Marx bank, they charge in parallel ultimately reaching the DC input voltage (assuming it doesn’t fire before fully charging), so 30 kV would be an issue. You’re right though, output from the multiplier definitely doesn’t look like 30 kV, I’m guessing more like 10k… not sure what was going on with the scope, probe probably needs calibrating or maybe I nudged the dial and accidentally set it to x500 rather than x1k. No idea what happened to PSU, very weird, Marx bank fired and immediately the power went off (like I’d removed the mains). Wouldn’t turn back on, changed the 13A fuse in the lead and the 3A fuse in the PSU, still totally dead. Completely opened it up and couldn’t see anything obvious (no burnt components etc). There might be some other internal fuse I’ve missed, but tricky to know without the circuit diagram. If I had to guess, I’d say the Marx output directly to the psu ground terminal probably sent a sufficiently high current pulse to raise the voltage of the ground up, that’ll destroy most things unfortunately! Better to use a battery and a separate earth, but I didn’t fancy clipping the battery by hand and I don’t have a decent Earth in that lab, unfortunately! Thanks for watching!

    • @hermajestyflore
      @hermajestyflore 5 месяцев назад

      @@thecircuithelper as i said i would use a voltage divider. Also Car ignition coils opperate at low-ish frequencyes, so unless the capacitance is very high, the impedance is huge(u can see this when people use MOTs as a power supply). Discharging to your supply ground is never a good idea lol. And i realy think you should get good grounding in your lab. I realy dont know what happened to ur power supply tho... hopefully you can find a new one.

  • @thecircuithelper
    @thecircuithelper 6 месяцев назад

    Check out this video for more details on how the voltage multiplier works: ruclips.net/video/4alV5LzHLE4/видео.htmlsi=Xc_Y2O8WYmTmypQf

  • @johnnywintery8608
    @johnnywintery8608 6 месяцев назад

    I have to say, that looks bloody dangerous! What would happen if you got ‘zapped’ by the output?

    • @thecircuithelper
      @thecircuithelper 5 месяцев назад

      I dread to think! Quite a lot of stored energy, could be fatal, certainly not something to play around with!

    • @GilmerJohn
      @GilmerJohn 5 месяцев назад

      Voltage multipliers with small sized caps are routinely used in bug zappers. Unless they are "super-sized" they can't do any real harm. OTOH, a microwave power supply can kill you if you just look at it hard.

    • @thecircuithelper
      @thecircuithelper 5 месяцев назад

      The multiplier would hurt, but I guess such low current DC wouldn’t be a ‘show stopper’. I would not want to get zapped by the Marx generator though, caps are 1 nF and there’s 8 of them charged to somewhere between 10-20 kV, this gives 0.5 x (8nF)x (15k)^2) = 0.9J… in comparison a microwave oven cap has approx 2J of stored energy (assuming 1uF, 2kV), a defibrillator capacitor can be around 100J, an enormous amount of stored energy to release in a few microseconds! Of course the internal inductance limits how fast this energy can be delivered and the cheap caps used in the Marx here are pretty poor (although adding them in parallel helps)….

  • @johnnywintery8608
    @johnnywintery8608 6 месяцев назад

    Hey, this is cool! Did you try any other gases? Doesn’t work with just air?

    • @thecircuithelper
      @thecircuithelper 5 месяцев назад

      I didn’t, but for sure it would work in Helium and Neon (although both are too expensive to try these days!). Air might work in this configuration, but not with this power supply, it would need much higher voltages. Thanks for watching!!

    • @johnnywintery8608
      @johnnywintery8608 5 месяцев назад

      @@thecircuithelper Interesting, thanks!

  • @fabhacker
    @fabhacker 6 месяцев назад

    AI

  • @johnnywintery8608
    @johnnywintery8608 7 месяцев назад

    Thanks 👍

  • @johnnywintery8608
    @johnnywintery8608 7 месяцев назад

    Very helpful, thanks!

  • @johnnywintery8608
    @johnnywintery8608 7 месяцев назад

    As you say, it seems relatively easy when you go through the solution, but it’s tricky to get the answers under exam-like conditions! Think I did ok in the end though, probably got around two thirds of the marks.

    • @thecircuithelper
      @thecircuithelper 7 месяцев назад

      Great that you tried!! Sounds like you’ve made good progress too, stick at it with the other exam videos and let me know how you get on!