Questions tagged [shock]
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59
questions
0
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0answers
60 views
Skin effect at high voltage
I recently made a slayer exciter circuit in order to determine the resonant frequency of my secondary coil of my yet to build SSTC.
When running the slayer exciter at 40V DC the circuit consumes ...
0
votes
2answers
72 views
Removed paint on power supply, what paint to use to prevent against shock [closed]
I purchased a mixing board that uses an external power supply. Apparently at some point in the PSU's life, paint remover or similar found its way onto the unit and removed a portion of the enclosure's ...
1
vote
2answers
133 views
Can you die when your plugged-in mobile phone falls in the bathtub? [closed]
I have questions related to the safety of using mobile devices in the bathtub. I always thought the danger in dropping it or getting water on it is mostly to the device, not to the person, but a ...
5
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3answers
2k views
Feeling a tingling sensation by touching stuff, Is this safe?
I'm putting on my desktop computer on steel rack as usual. A while ago, when I touch the steel rack for seconds, practically I feel a tingling sensation, sort of electrical shock in my finders. After ...
1
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0answers
55 views
Simulation of an Electric Shock Box
This is the continuity of this: Understanding Electric Shock Box Circuit
I really don't understand what is going on, so I was hoping that simulating the circuit in Proteus might help
What parameters ...
0
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2answers
126 views
Understanding Electric Shock Box Circuit
I have just bought an Electric Shock Box Kit.
I am trying to understand how the circuit works, so by doing reverse engineering I obtain the next circuit:
I don't understand how is generated the ...
0
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3answers
198 views
What causes a thorn like feeling when your put your hand in water in electronic appliances?
I live in India, the voltage supply in houses is 220V.
Sometimes, for example in my washing machine, when it is full of water and I put my hand in it, I get a feeling like a thorn/tiny nail is ...
0
votes
1answer
44 views
Static electricity when touching any metal after power down
I have a PC connected to a couple of devices via a serial port.
The item labelled "COM" is a simple manual serial port switcher that requires no power.
The item labelled "Rad" is a radio module ...
2
votes
2answers
80 views
Live wire and ground question
I am trying to fully understand the danger of AC voltage but still I have some questions...
I understand that human body has a capacitance that facilitates AC current penetration. I also understand ...
0
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1answer
53 views
Current flow though Pin of ups [closed]
I forgot to plug in my computer's ups(uninterruptible power supply) pin in socket.UPS was turned on.I accidentally touched the neutral pin.I got a electric shock.Why?
2
votes
1answer
76 views
Are large pulsed currents the most deadly type of electric shock?
As opposed to sustained electric shock via DC or AC?
I might be wrong, but when people are killed by electrocution it is usually due to a large current of very short duration passing through their ...
0
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2answers
148 views
Any trick to use the ground pin? [closed]
I have bought a new charger for my laptop. The case of my laptop is made of steel and so it sometimes give electric shock as I don't have a ground wire in my house.
And, I currently don't have any ...
0
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2answers
86 views
Can you receive a shock by touching only one probe ?
in this video at 4min 4sec
https://youtu.be/CkGVMWK10qU?t=243
The guy receive a shock of a taser by touching a metal object that touches one probe, but why does the arc goes through his body ? I know ...
4
votes
1answer
792 views
Electric shock from outdoor security cameras
I just bought this outdoor security camera kit from Amazon.
(Amazon product link)
When wiring it up, I noticed that I got a small sharp shock when touching the small screws on the metal casing ...
0
votes
3answers
2k views
Is the voltage supplied by an LCD backlight inverter in a laptop dangerous in any way?
It is my understanding that in a laptop, voltage from a low voltage (say 10V) battery can be converted into higher much higher voltages by way of inverter for an LCD display module. Is this voltage ...
0
votes
2answers
229 views
Using a microcontroller to produce a shock
I am currently working on a project for school and we are creating a mock pavlock although much simpler. We basically want a microcontroller to be able to keep time and shock at specific times. We ...
1
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0answers
83 views
Electronics at high acceleration
I would like to meaure g-force (100 - 4000 g) within a centrifuge (I know it sounds silly because it can be calculated but it is more of a learning thing). I thought of a 3d printed enclosure housing ...
0
votes
2answers
65 views
How long would the capacitors in an iPhone power adaptor hold potential energy?
I was curious as to whether one could potentially get a shock after touching, with sweaty hands, the prongs of an IPhone power adapter upon unplugging it. If possible, how long would this charge take ...
1
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2answers
1k views
Protecting yourself with latex gloves
Would wearing white latex gloves(doctor gloves) protects you from getting shocked when repairing electronics?
And is there a reason why you seldom see anyone wearing gloves when dealing with ...
0
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6answers
1k views
Why am I getting shocked from “hot” line and touching “ground” (Earth)
So I live in an EU country and don't have Earth grounding for my house. Still I am getting shocked when touching "hot" line (220VAC) and standing on "ground" (Earth). How is this possible?
From my ...
56
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6answers
17k views
Why am I not dead after repeatedly touching a high-voltage source?
While playing with mosquito racket in my home, I unscrewed the racket and touched the 2 wires with my hands. I felt that my bones were dislocated, I got shocked, but I am not dead.
My calculations ...
3
votes
3answers
2k views
Whats the minimum voltage and current to feel stimulation on skin?
What I'm trying to ask is what voltage and current is necessary in order for it to be felt on the skin when touching an electrode? And is AC of DC better for this job?
I know it depends on the ...
0
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1answer
213 views
Can daily 90VAC shocks have effect on human body? [closed]
There is external audio card on my desk with gold plated ports. For several years, whenever I accidently touch these with my elbow I would get a little shock, sometimes I would touch the PC case with ...
1
vote
3answers
549 views
How can a device like the ETP BD-10A pass electrical safety testing?
http://www.electrotechnicproducts.com/vacuum-leak-and-holiday-detectors/?sort=bestselling
The device produces output exceeding 55kV in short pulses. The current while claimed to be low by the ...
0
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1answer
955 views
Is it safe to touch 1000 Volts DC at 1 mA of constant current? 0.1 mA? 0.01 mA?
I would like to study the phenomenon where thousands of volts are safe to touch. Generators like Tesla coil and static electricity generators generate discontinuous sparks, which is why they are safe ...
-1
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1answer
827 views
Is it normal for an RCA cable to carry a perceptible (to a person) current? [closed]
Recently when disconnecting an RCA cable from a computer I was surprised to receive a shock from the male connector at the end of the cable. The other end of the cable was plugged into a stereo, ...
12
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3answers
594 views
Electrocuting a fruit fly using magnetic induction
We are electrically inducing heart attacks in fruit flies to test the effects of various treatments on survival. We are shooting for roughly a 50% survival recovery rate in our control group.
I work ...
0
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0answers
216 views
Electric current felt over the case occasionally!
We have made one vacuum former for dental medical usage.
In testing, the operator reported:
1-Electric current felt over the case of the device occasionally!
2-hanging in some routines ...
0
votes
2answers
223 views
Do DC Power Jacks need waterproofing?
I plan to use a pair 5.5x2.1mm DC Power Jack as shown below to connect a battery pack to a DC motor that will drive an electric tricycle. Occasionally it may rain while the tricycle may be in use and ...
0
votes
1answer
167 views
most resistant substrate layer to embed a specific wire
I am in process of embedding a wire in a choice of substrates. I would apply voltage so much as to heat it (the wire) to 220 degree Celsius max. What are the best choice of substrates I can use so ...
0
votes
1answer
184 views
in some places when we are working with cables at home we get shock and therefore we are thrown away
In some places when we are working with cables at home we get shock and therefore we are thrown away.. but in some places like Asia when you get a shock you are stuck with the cable until someone ...
0
votes
2answers
498 views
Connect PC chassis to the ground of TV coax cable?
I'm living in a house with electrical system without Ground wire and when I touch my PC case while standing on ground I get a zap from it which I believed are from suppression capacitor in PSU, I've ...
2
votes
2answers
3k views
What can shock you in an unplugged electronic device?
I'm trying to do maintenance on my stereo system and I know that capacitors will hold an electrical charge, but is there anything else that could shock me? I'm not sure this is the right place to ask ...
2
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2answers
255 views
Risks of using device body as heat sink for IGBT and Bridge rectifier
I want to know is any risk factor (electrical shocking or ... ) for using one aluminum (4mm) device body which is used as heat-sink for IGBT and Bridge rectifier that are working with 220 volt power?
...
0
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2answers
221 views
Confusion with RCD principle of operation
I understand that an RCD is a device that interrupts an ac circuit (usually in outlets) if current between live and neutral/ground is not the same, indicating something is wrong with the circuit. It ...
19
votes
6answers
8k views
How did I survive this shock? [duplicate]
When I was about 10 years old playing with lamps, I accidentally picked up a wire completing a circuit for a lamp plugged into the wall (120 V AC U.S. standard). I'm not sure if it was the hot or ...
5
votes
1answer
2k views
Why do you get shocked touching a live wire?
A number of times (over many years) I've accidentally touched a live AC mains wire (120V, 60Hz) while working on home wiring. The feeling is always similar: uncomfortable tingling feeling at the ...
2
votes
2answers
364 views
When we use Earthing and Bonding?
I read in some articles the difference between the earthing and bounding. But i still don't understand when we use bonding. I think Earthing is the more important part to grounding and protect from ...
2
votes
1answer
164 views
Why does one person get shocked?
I have a small snow machine that I purchased. It comes in a wooden box with metal, I assume aluminum or maybe stainless steel, trim around it. It connects directly to a standard 110vac power. ...
2
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0answers
247 views
How in the world does this prank pen work? [duplicate]
Help here would be greatly appreciated:
This question has been asked several times on this site and elsewhere, and it seems as if the posters became satisfied with inaccurate answers.
How on earth do ...
0
votes
2answers
4k views
Why am I getting electric shock from 12V DC Adapter
May be this is a weird question. But I am little curios to know why my 12V DC adapter is giving shock when the circuit is complete.
I purchased couple of these 1 AMP 200V AC to 12V DC adapter. ...
-4
votes
1answer
137 views
220v ac to 12v dc with capacitive reactance geting shock [closed]
can any one tell me if I use capacitive reactance to drop voltage from 220v ac to 12v and then use bridge rectifier to get polarity, now output from the bridge rectifier can shock me with respect to ...
2
votes
4answers
811 views
How can I test a wire for small holes?
I have stripped one wire, the black/hot/positive one, for a 120v appliance. I had to cut away the outer plastic that surrouneds all three wires, and now I'm afraid I may have nicked a small hole into ...
1
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3answers
164 views
Contradictions in conductivity
I mostly know how electricity flows but cannot understand some aspects, and have three examples that I cannot fathom:
The pilot lighting electrode wire on my house central heating water heater /...
4
votes
4answers
9k views
Why does isolation transformer protect from shock?
Perhaps I can best explain the question with two examples:
(1) there is PC powered directly from 230V mains (unprotected by RCD or similar), and there is fault in PC that causes line voltage to ...
1
vote
3answers
330 views
Could a 220 V wire shock me if I hold a 4 band Orange Red Orange Violet resistor in series?
A noob level question and I am afraid of electric current since childhood shock.
So a wire goes into wall socket, 200v input. If I hold a resistor of 32 Kilo-Ohm and touch wire with it's other hand ...
-5
votes
1answer
536 views
is a 555 timer flyback driver lethal?
i have always heard on websites that the 555 timer flyback driver is not lethal. i know that the common ZVS driver is lethal but would the 555 flyback driver be able to deliver a deliver a lethal ...
0
votes
2answers
898 views
Can touching connections between each WS2812B-LED result in a shock [duplicate]
WS2812B LED-strips are ran at 5V, and can consume up to 60mA per LED. This can quickly add up to a few amperes.
Would I receive a chock if I'd touch the ...
43
votes
8answers
82k views
Can a 12V battery give you a shock or not?
I am reading a book called "Make: Electronics" and, on page 9, it says:
"Anyone who has dropped an adjustable wrench across the bare terminals of a car battery will tell you that short circuits can ...
1
vote
1answer
4k views
Minor electric shocks from touching appliances, loose ground? [closed]
I get minor electric shocks when handling everyday home appliances barefoot. These appliances include laptop when the charger is connected and fridge etc. Can the reason for this be loose ground ...
