How to Build Electronic Circuits : How to Safely Work with Electronics

[plazmafeld]

I like your style, i seek your great wise knowledge, more input input input

[MegaLinuxer]

the bob ross of electronics

[ErickV88]

@MegaLinuxer You're right! The coin salesman with a lisp is good, too.

[ultimatenetnut]

I think even the electrons fell asleep....

[bradmaempel1]

1:55 also when you unplug something ...... it does not mean it's safe

[SalsaTiger83]

maybe he crosstrained from hypnosis

[happygamestvfun1]

this guy sound like he wasnt being safe and fried his brains out

[h82sk8]

This was not helpful at all?

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Do you even know anything about electricity?

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The caps will only hold a charge for hours and the fly back transformer will be completely safe after 48 hours.

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Those components can be made safe immediately after use by shorting the contacts to each other or the ground.

[macuser7080]

@h82sk8 ya! he says dont mess with it , well what if we know what were doing?!

[oleksiypilyugin]

@h82sk8 i wouldn't recommend to short the contacts, you could blow up the unit or even get shocked if the charge is high enough

[h82sk8]

@oleksiypilyugin Blow up what unit? What is a "high enough charge"? I'm sorry but you are also wrong. Unless we are talking about different devices?

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Shorting the contacts of any Capacitor is the proper way do discharge residual energy. After all they are just fast acting batteries. Discharging batteries is the same but must be done slower thru a resistor. The FBT also has internal capacitance so it should also be shorted to ground. Always unplug from wall before opening tv. More at wikipedia:)

[h82sk8]

@oleksiypilyugin Another note worth mentioning here is: TVs' don't contain enough voltage to kill a normal healthy man. Contrary to popular belief a shock from the Flyback Transformer will only make you wish you were dead for a second. Since after all it is 15kV-50kV at 15kHz-150kHz. The kicker here is the current is Less than 10mA. When lethality for most people is more then 1A. Most Tasers are more than 250kV and 300kHz but Less than 1mA. I have been shocked by both and either one sucks!

[Watcher3223]

@h82sk8

"TVs' don't contain enough voltage to kill a normal healthy man"

It's not the volts that get you. It's the amps.

A CRT operates at a very high voltage, but the amps are relatively low.

You're correct that, if you get zapped by the parasitic capacitance in a charged CRT or the up-stepped B+ from the anode lead of the FBT, the experience will be unpleasant to say the least but you won't die from it because, while the potential in volts is very high, the current in amps is too low.

[Watcher3223]

@h82sk8

For discharging a CRT and FBT, discharge anode lead to DAG ground; NEVER discharge to chassis ground.

However, caution must still be exercised because getting zapped can cause other accidents.

And, there are some devices where inherent capacitance is potentially very dangerous, such as a mains capacitor for providing start-up energy in a microwave oven, especially if the capacitor is not rigged to self-discharge when the oven is unplugged.

[nagoia1984]

OMG U SPEAK LIKE A FREAKING ROBOT!!!

[d3rki]

omfg mate you don't know anything about electricity. volts don't kill people..... a car spark plug is 40,000-100,000 volts but can't kill you, amps kill you this is the power. 1 amp is enough to kill you. and capacitors can't store enough electricity to kill you.

[Evanator22742]

@d3rki

Are you serioulsy saying capacitors cant kill you? That is exacty what a defibrillator is.

[dpgfernando]

deam you guys should stop posting videos!!

so stupid

[stdavross666]

what hes trying to say is to make the TV safe to work on 100W light globe to big capacitors in power supply circuit...now safe....now remove HT lead to the CRT with pair of pliers and touch to the aquadag coating on CRT...now safe...now do whatever you want with the TV. much better than this bull. If you dont know what these are or where to find them dont touch it at all!

[desertman123]

the flyback transformer is 100% safe. the anode (under the cap) has the current

[BurningArtsStudios]

That was shit and boring

[criticalzen]

This guy is the Rob Ross of technology. He should have gone and put on a chain mail glove and and grabbed the capacitors on that TV before making this vid.

[violanteX]

HE IS a ZOMBIE!!!

[herebesmewa]

I think the lesson to be learned here is that if you listen to what he's saying ratrher than how he's saying it then you will realise that he's giving yo some pretty useful information for free. If you werent interested then why did you all watch?

[Leandru5]

he needs some caffeine

[Madness832]

This guy is high on solder fumes or something!

[dual85]

Voltage or electromotive force is alternating flux around moving inductors that drive electrons from an atom. Voltage is potential difference between a plus and minus dc source - battery. Electrons have a static fields. The static field between charge - interacts with protons + in a circuit. Potential difference in a battery -+ can be likened to energy available at the peak of a roller coaster. When you fall and finally reach level all of the coasters potential energy is expended.

[dual85]

Capacitors in microwave ovens store massive charge and HV. Capacitors have high power density and low energy density. This means capacitors pack enormous punch but only exhibit this for a short time, no different than a lightning bolt. It lasts a fraction of a second. Capacitors can be used as filters. They can be used to alter a waveform for some application. Maybe you want the waveform to pulse. You can have the waveform charge a chemical battery or control electric motor speed and eff %.

[furlougha]

So, can you help me?I have a fence charger that was damaged by lightning.I think it was a capicator that exploded,with few identifying letters and numbers.How do I determine what size or strength to look for? Where could I find one? It is about the size of a nickle and the length of a cigarette.

[amybas]

i like his video's .. but the dracula voice..... it's f-ing anoying. please man ... speak in fast mode so you dont bore me to death.. please

[100roberthenry]

is this guy dead..?....

[gescoboza]

AHAHAHAHAHAHAHAHAHAA holy shit dude ! Where you born a dildo or did you learn to be an ass? HAHAHAHAHAAHAHAHAH that line was hilarious !

[skierplaterandy]

u didnt finish your explinations. there is no conclusion what a pile of bullshit.

[gmcjetpilot]

"u didnt finish your explinations. there is no conclusion what a pile of bullshit. "

Where you born a dildo or did you learn to be an ass. He gave some good advice about the fly back transformer and capacitors that can shock the crap out of you (yes dead) even after the device is unplugged. The message conveyed, use extreme caution. Now run along troll you are too much of a tool to understand. I predict you'll be a future recipient of a "Darwin Award", for extinction of another dumbass.

[skierplaterandy]

i already knew that. but he didnt conclude himself. and he just went around in circles and lead one thing to another that didnt always relate to the topic.

[gmcjetpilot]

"one thing to another that didn't always relate to the topic. "

Oh I see, the title of the video is:

"How to Safely Work with Electronics"

OK so NOT electrocuting your self DEAD has nothing to do with safety. Right, has nothing to do with safety? Have you EVER worked with high voltage electronics?

Look, you embarrassed yourself, now twice. Stop (if you can) from being an ignorant douche bag. There's no future in it. You need to run along troll and say you are sorry.

[kingjames650]

He called you a tool, a dildo, and a dumbass... and your comeback is "i already knew that"??

[devastaticon]

expert village sucks ass

[jdsanchez473]

why does everyone on expertvillage talk so damn quiet??? Talk so we can hear, grow a pair.

[success4111]

@jdsanchez473 turn your volume up, you illerate expierimental half a mind monkey rat face fuck head

[diaryofascholar]

@jdsanchez473 I like this guy. Don't mess with the voice. Why does everyone have to sounds like the Shamwow guy or Billy Mays...so high-strung???

[desertbard]

Picture tubes make excellent capacitors and often had tags on them warning they should be discharged properly.

[DidntKnowWhatToPut1]

the way he talks is kinda creepy...

[brenyboy26]

his talking like that because his seriously thinking about what his goign to say before he sais it, which is why you never hear him make mistakes in his speech because he speaks slowely and under control

[kingjames650]

But he sounds like a child molester

[patrickikis]

I agree. I don't go near any caps on the main or neck boards out of paranoia. If remopving the anode cable from the CRT, I use a screw driver with croc clips and a

200k 5W resistor with respect to ground. I agree, it is a pain to know that ther are capacitors that are not fitted with a bleeder. Thanks for the info. Most appreciated.

[SmartNameHere]

what a wuss.

[hayabusafmw]

why doesn't instead of saying it's dangerous he doesn't talk about ''DISCHARGING'' & how to properly work around them , instead of saying your gonna die don't touch it.

[patrickikis]

Normally the capacitors on the main board will have discharged automatically after disengaging the power. The capacitors on the neck board have more potential to give you a shock (not fatal), after the power has disengaged.

[BlokeFromBattersea]

Rubbish. The main smoothing cap or resorvoir, will remain charged to 360v for hours even days after switching off.

[patrickikis]

Agreed, I said most of the capacitors. I worked for three years with specialty CRTs, and the only capacitors that retained a charge after disengaging the power were located on the neck-board. At least with the boards we were using. I received a nasty shock once by one of these capacitors.

Most of the caps are discharged after the power is disengaged via a bleeder resistor.

[BlokeFromBattersea]

Hi Pat

I have worked on TVs since 1972. The worst shock you can get from a TV is from the mains input. Next on the list are from charged up reservoir capacitors. Reservoir capacitors in most sets, retain their charge because the stupid manufacturers don't fit a bleed resistor. I have received many times a painful and unwelcome shock from these. Even after many hours/days. I use a 220k 2W carbon resistor with croc clips to discharge these caps, but occasionally forget - ouch!

[skierplaterandy]

hahaha its like when i was trying to make an electronic ignition system from a disposible camera flash. when i disconect everything i use a resistor to ensure it is discharged before i work on curcutry. but sometimes i forgetand it hurts like hell. (like 330 volts)

[Kukkaloota]

Amperage hurts, not voltage imo.

[skierplaterandy]

yea. but the higher the voltage the eaiser the amperage can penetrate your body. you cannot be hurt by a 9 volt battery even though they can put out enough amps to kill you. but if you have a 100+ volt capacitor it can penetrate eaisily and therefore causes more amps to penetrate.

alot of people say amps hurt (which they do) but they don't realize that amps need higher voltages to hurt you.

[sciencoking]

it also depends on WHERE you put the voltage.

Ever touched the contacts of a 9V battery with your tongue? try it out.. oh and use empty ones, they still hurt...

[skierplaterandy]

yea, but that has nothing to do with volts or amps, that is a difference in the resistance of your skin in different parts of your body. there are also different amount of nerves in different parts. the resistance will change the amount of amps, but still, the amount going through at 9v is not enough to cause any damage. and no 9v batteries dont hurt.

[Kukkaloota]

Ach, who cares. I haz TC, hasn't killed me yet :D

[zezimashock]

voltage does hurt too. amperage kills, not voltage.

is what you want to say.

[Alexselectronics]

No, voltage hurts, amperes stop your heart. Voltage burns the inside of your body.