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#2
07-28-2011, 11:13 PM
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The whole trick here is hes using the very limited current from the flyback, insulating himself from ground and passing the hv from one finger to another. The sweater he is the better. High current!?!? its less than 1ma!
These are all tricks that look cool because people are so afraid of electricity. I can and do all the same crap. It takes 50 ma to kill someone. Look at what hes doing to light that incandescent bulb, hes passing very low ma from the fly of that tv and charging that oil cap to flash the bulb. The trick is using the metal to draw the arc. The arc hurts because the area it penetrates is so small. One of my tricks is to hold on to a big screwdrivers lay my arm on the fender and draw a big arc from a high energy ignition of a car to the screwdriver. Blots peoples mind. If hes so hard core lets get him on a neon sign transformer and see how well he does. And yea, ill hold touch the ends of a line cord together and watch the spars. I was doing that when i was 8, and hes touching the line with the tips of his nails. Last edited by ctc17; 07-28-2011 at 11:20 PM. 
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#3
07-29-2011, 07:18 AM
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I watched an electrician once use his fingers to check for electricity in a circuit breaker box. I was working at a tv shop at the time, and they were adding some stuff to the store next door, all of us stopped to watch this guy test the new circuits. He must have had very callused hands, and very dry fingers as well. I remember the best shock I ever got was in a 19" tube color tv I put my hand between the yoke and flyback case and watched a nice bright spark jump from the yoke frame to the flyback case. It left a hard burn spot in both sides of my hand for a month. My tv repair instructor drilled us to keep one hand in our pocket while doing stuff inside a set, I still do it. I think that set I got a shock off of might have had poor grounding around the main tube...... Yup that day I saw electrons fly!
__________________
Yes you can call me "Squirrel boy"
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#5
07-29-2011, 10:24 PM
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#6
07-29-2011, 10:35 PM
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He is drawing the spark from the secondary of a flyback. This is a high voltage, and hurts like heck. Especially if you are not expecting it, but it is very low current and it is a high frequency. The higher frequency current will tend to flow on the outside of a conductor. So the current would flow along the outside of the skin instead of through the muscles and heart. This could explain the static field that they were talking about in the video. Still I dont think I would be up to doing these things on purpose though.
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#8
07-30-2011, 11:27 AM
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Let's see him do that on a DuMont RA101 with a direct step-up HV supply... 7500 volts at line current (minus the factors in transformation/rectification), with a 15mfd @ 12,000 volt oilfilled cap!
 Charles
__________________
Collecting & restoring TVs in Los Angeles since age 10
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#9
07-30-2011, 01:29 PM
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I got across the secondary of a microwave transformer and that almost killed me. Better to put it in the trash and buy a new one like everyone else.
Im not afraid of the line or tv voltages at all. The danger is over 1000 volts ac where theres allot of available current. Microwave over/ neon sign transformer will kill you dead and leave you smoking.
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#11
07-31-2011, 01:30 AM
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I don't fear voltage, I fear current. That said I've had some mean shocks In my nearly two decades on earth the worst three in memory (there are many that are forgotten as my folks tell me that back when I was an infant I used to stick my fingers in the outlets regularly and had defeated all child protections for the outlets they could find (the best one only lasted 30 minutes against my intelect! )). I believe that the worst was from a set of christmas lights that wad been hedge cliped and I for some stupid reason was taking down under power on rainy day. The metal contact of a busted bulb brushed my arm and the burning sensation lasted quite a while!
The next worst was reciently when, after fixing a vertical failure on my Silvertone roundy, I was fixing the purity and convergence and grabbed the corroded vertical winding on the yoke. This unnecessary second confirmation of my repair caused my electricty reflex to make my arm shoot back with such force that it ripped the convergence board end of a wire that grounds the blue lateral magnet clean off! The third worst was when I discharged the CRT of an 80's color set I was scrapping through my hand, and the thing had been on only moments before. Need less to say that there were explitives worthy of the vocabulary of a pirate uttered in each of thse incidents. I'm not as afraid of being killed by this equipment as I once was but I'm still very careful when working on any thing that is running or has charge. Tom C.
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#12
07-31-2011, 09:45 AM
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back many years ago,i would collect crt duds and sell them to a rebuilder.bought many christmas gifts with that money.i had approx 30 outside covered by a tarp.my oldest son was about 7 at the time.he would stick his finger in the bunghole of these crts.never got shocked.once,he even put his tongue in one!my other children grew up to be normal.
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