How not to blow up your scope ElectroBoom style - Page 1
Forum section: electronics / general

author: Stonent
author_rank: Super Contributor
timestamp: March 08, 2015, 05:42:28 am
content: Eh, just let it float...

author: ElektroQuark
author_rank: Unknown
timestamp: March 08, 2015, 08:48:35 am
content: Is he acting? I hope so...

author: mcinque
author_rank: Unknown
timestamp: March 08, 2015, 09:09:14 am
content: It's obviously scripted, but it's ridiculously funny!And, even if it's scripted, what he get is absolutely real

author: george graves
author_rank: Super Contributor
timestamp: March 08, 2015, 09:53:04 am
content: Kapton tape on the ground plug.....I know he's joking around, but people are actually going to do that.

author: Stonent
author_rank: Super Contributor
timestamp: March 08, 2015, 11:40:52 pm
content: Quote from: george graves on March 08, 2015, 09:53:04 amYeah, much easier to snap the ground pin off. Then no worries about the tape wearing through.(Though, if you had an GFCI/RCD on the line, that would be your best way to protect against forgetting that scopes are grounded)

author: c4757p
author_rank: Super Contributor
timestamp: March 08, 2015, 11:42:07 pm
content: Quote from: george graves on March 08, 2015, 09:53:04 amIndeed. I think I read it in Darwin 3:2-15 or thereabouts.

author: Stonent
author_rank: Super Contributor
timestamp: March 08, 2015, 11:46:21 pm
content: Oh, and by the way.FULL BRIDGE RECTIFIER!

author: Vgkid
author_rank: Super Contributor
timestamp: March 08, 2015, 11:49:52 pm
content: Don't read those youtube comments.

author: Stonent
author_rank: Super Contributor
timestamp: March 08, 2015, 11:54:09 pm
content: Now here's something that I was taught when younger. I was always told that high voltage DC is more dangerous than AC because it can cause your muscles to contract, preventing you from releasing whatever shocked you. With AC, since it is alternating, you are able to release the dangerous item easier.

author: tom66
author_rank: Super Contributor
timestamp: March 09, 2015, 12:21:13 am
content: Quote from: Stonent on March 08, 2015, 11:54:09 pmGenerally AC is safer especially at high frequencies due to theskin effect. But it turns out that the low frequency 50-60 Hz AC is worse than DC because us meatbags are particularly conductive at thatimpedancefrequency.

author: Zero999
author_rank: Super Contributor
timestamp: March 09, 2015, 11:01:16 am
content: Quote from: tom66 on March 09, 2015, 12:21:13 amHigher frequency AC being less dangerous than power line frequencies has nothing to do with the skin effect. If the skin effect protected you then microwaves wouldn't penetrate food so deeply. Because human flesh is poor conductor compared to metals, the skin effect only becomes a protective factor at 30GHz or so.Frequencies above 10kHz or so are less dangerous because the nerves don't respond to higher frequencies. The danger from being cooked is still there though.

author: bktemp
author_rank: Super Contributor
timestamp: March 09, 2015, 11:45:46 am
content: Quote from: Hero999 on March 09, 2015, 11:01:16 amExactly. Human skin is a good insulator. The blood vessels or muscles are a much better conductor than fat or other parts beneath the skin. And if you do the math using the skin effect formulas on the substances you find in the human body you get a penetration depth much deeper than the diameter of an arm or a leg.QuoteYes, but the human body can tolerate quite a lot of heat at least in areas with a good blood circulation.RF currents are beeing used as a scalpel. The hot end is a wire used as the scalpel, the return path is typically a large metal foil glued to the leg. The power levels are quite high, somewhere around 100W. The body can conduct this without any problems. Only at the contact point of the thin wire the high power density burns the flesh.DC is more dangerous than AC because of the damage due to electrolysis in the body. This leads to poisoning.

author: tom66
author_rank: Super Contributor
timestamp: March 09, 2015, 11:53:19 am
content: Interesting, you learn something new every day.

author: Zero999
author_rank: Super Contributor
timestamp: March 09, 2015, 01:31:35 pm
content: Quote from: bktemp on March 09, 2015, 11:45:46 amWhere did you hear that?Generally line frequency AC is considered to be more dangerous than DC as it's more likely to cause ventricular fibrillation.The main danger from electrolysis seems to be burns due to the caustic substances generated and it's most likely when a battery is swallowed.Here's the only thing I could find on the subject:http://www.poison.org/battery/mechanism.aspDon't forget that electrolysis can occur with low frequency AC too. The difference being caustic substances will be generated at both electrodes at half the concentration.

author: miguelvp
author_rank: Super Contributor
timestamp: March 09, 2015, 01:38:04 pm
content: Just ask Edison he liked to electrocute animals during his anti-AC war with Tesla.Including this poor animalhttp://en.wikipedia.org/wiki/Topsy_%28elephant%29Edit: Well, maybe he didn't take part on that one particular animal, but he did with others:http://en.wikipedia.org/wiki/War_of_Currents

author: AF6LJ
author_rank: Unknown
timestamp: March 09, 2015, 02:49:47 pm
content: This guy is competing for a Darwin Award.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: March 09, 2015, 03:24:04 pm
content: Quote from: AF6LJ on March 09, 2015, 02:49:47 pmToo late, I believe he's already got a family.

author: ConKbot
author_rank: Super Contributor
timestamp: March 09, 2015, 03:34:28 pm
content: Quote from: AF6LJ on March 09, 2015, 02:49:47 pmNot really, he hasnt done anything particularly dangerous in any of his videos that ive seen, just a few loud sparks and bangs for show. Despite everyone here calling for a isolation transformer with a GFI plugged into a GFI outlet before you even consider cracking the top of a mains powered device, mains AC isnt some magic boogey monster which comes out and kills you just for almost touching it.

author: Stonent
author_rank: Super Contributor
timestamp: March 09, 2015, 04:09:07 pm
content: Quote from: T3sl4co1l on March 09, 2015, 03:24:04 pmHow to Fix Blown Christmas Lights Fast and Easy:http://youtu.be/7foDiXX-CcE

author: Aodhan145
author_rank: Frequent Contributor
timestamp: March 09, 2015, 06:58:00 pm
content: Quote from: AF6LJ on March 09, 2015, 02:49:47 pm

author: Tinkerer
author_rank: Frequent Contributor
timestamp: March 10, 2015, 03:03:11 am
content: I have seen a couple other videos of this guy. Funny stuff in what he does is basically like "safe stupid stuff". I think the idea being he does so you dont have to and probably die from it or get seriously injured.At least one of his videos he has current going through water to show that you arnt going to instantly die from a short across water, depending on where the wires are of course.

author: SeanB
author_rank: Super Contributor
timestamp: March 10, 2015, 08:00:36 pm
content: Plasma globe and a bunch of grapes. Nice looking streamers, but when I had just a set of stalks on the top of the globe, and brought a fingertip near there was a nice display inside the globe, with a little spark to my fingertip. Did not feel anything for a few seconds, till I smelled cooking skin at the point of the arc, and had a nice little pit burned through my skin almost painlessly till it got through into the lower dermis. Healed up alright, but still left a small mark in the skin.

author: Unknown
author_rank: Unknown
timestamp: March 10, 2015, 08:07:32 pm
content: I don't think he realises that "bare" and "bear" are two different words.

author: rolycat
author_rank: Super Contributor
timestamp: March 10, 2015, 08:44:19 pm
content: Quote from: Halon on March 10, 2015, 08:07:32 pmReally?I think he is actually

author: Mechanical Menace
author_rank: Super Contributor
timestamp: March 10, 2015, 11:58:35 pm
content: While at the same time I'm happy I don't have a monobrow, Mehdi's eyebrows somehow make me envious...

author: T3sl4co1l
author_rank: Super Contributor
timestamp: March 11, 2015, 12:47:46 am
content: Quote from: Mechanical Menace on March 10, 2015, 11:58:35 pmThe dance at the end is icing on the cake.*beatboxing*Tim

author: vinicius.jlantunes
author_rank: Regular Contributor
timestamp: March 11, 2015, 01:49:30 am
content: Thank you so much for posting this guy's video, I've had at least 1 hour of non-stop laughing here watching his clips.