Questions tagged [shock]
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79
questions
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19 views
AC Leak or normal? [duplicate]
I have a strange situation in my house. From AC 230V I have an AC-DC 24V transformer which goes into a LAN Router with metal case. When I measure with a multimeter in AC Voltage between the case and ...
1
vote
2answers
144 views
Is it wattage that kills you and not specifically amps
First of all the actual amounts needed to kill and the body resistance is not important for this scenario.
Let's say we are working with dc.
Let's say that 100ma is enough to kill across the chest ...
0
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0answers
28 views
SMPS isolation and earthling shock [duplicate]
I have a laptop, which comes with an SMPS charger. The laptop charger is a very common type. I know there are some earthing issues in my home. I need to fix that. But SMPS isolate mains from the ...
0
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1answer
57 views
Measuring 240V on earth wire
One of our breakers was tripping every few minutes (which powers an air-pump and a few 12V solenoid valves.)
I went to measure the voltages and everything seemed fine.
As I went over and touched the ...
0
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0answers
90 views
Electric shock when touching insulated plug
Something weird happened.
My girlfriend tried to unplug our dryer from the wall outlet. We live in Germany.
She touched the plug on the insulation (like normal) and did not touch the pins, but still ...
15
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4answers
3k views
Is ground connection in home electrical system really necessary?
I know that the answer to my question is "Yes, it is!". The ground connection is needed to avoid a person touching a metallic part of faulty equipment to be electrically shocked. So the ...
0
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1answer
137 views
Why did a hot/neutral reverse lead to an HDMI cable shocking me?
I recently set up a new TV/home theater system for my dad. The TV had 3 HDMI devices plugged into it. I plugged a 4th HDMI cable into the TV, and as I reached for the opposite end of the cable with ...
0
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1answer
92 views
How to measure if there is current between point A and B when source and grounding is unknown
I understand the headline makes little sense, so here is a clarification on what's going on.
I used thick steel rods to create a second floor (loft) in my apartment. Those steel rods are attached via ...
0
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2answers
58 views
Which parts of an AC relay does the electrical current flow on?
Below is a common relay that is used in Arduino projects. When the AC lines are connected, if I touch the screws that holds the AC lines (marked as "1" in the image) do I get an electric ...
4
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3answers
372 views
Electric shock - remedy an option? [closed]
Simultaneously touching my dishwasher (i.e. the aluminum coating on the inside) and my kitchen sink just gave me a rather unpleasant electric shock. Measuring the potential showed around 110v between ...
2
votes
1answer
153 views
Why would touching a rubber insulated spark plug wire causes current to go through your finger?
I'm trying to understand the physics. The spark plug has a gap of 0.9mm.
Why would the current go through the insulation resistance, the finger resistance and the air gap between the finger and the ...
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3answers
125 views
Would a person receive a shock/risk death if they completed two ends of a neutral wire?
I know this seems like a silly question but I'm trying to make sure I understand the neutral wire. So I know if someone touched a neutral wire (assuming everything is wired 100% correctly) carrying ...
2
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3answers
592 views
Electric shock from laptop [closed]
This is something that happened recently.
I was casually using my laptop with the laptop placed on a table, charging and my feet on the marble floor below. Only one of my feet was in contact with the ...
0
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1answer
938 views
HDMI cable sparks and shocked me [closed]
I just owned a desktop PC and as display I connected my TV through HDMI cable.
Today I changed the HDMI cable to one that can handle 4K resolutions. So I disconnected the old HDMI cable and then with ...
1
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3answers
121 views
Small shock from mains
Okay so I was replacing some sockets the other day and accidentally got a small shock (for some reason one upstairs socket was not connected to the upstairs sockets breaker...)
Anyway I only felt a ...
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11answers
7k views
Should I ground my body when working with 200V+?
I was working on a project converting 220V AC to 5V DC and I accidentally touched the underside of the transformer which gave me a big shock and I was wondering if it's a good idea to ground my self ...
0
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1answer
87 views
A quetion about how an electric shock game works
can someone explain to me why does the current pass through his hands? why doesn't it pass only through the aluminum since electricity always chooses the easiest path?
https://www.youtube.com/watch?v=...
-1
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1answer
102 views
Can a 1.5V cell and a small 'toy' motor produce an electric shock? [closed]
Customer complained of exactly that. Our product is literally nothing more than a 1.5V "C" cell and a small toy motor. (Yes, it's alot like one of THOSE toys, but it's not one so stop thinking like ...
0
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1answer
59 views
Electric shock from cover of preamplifier
I'm using a Focusrite Scarlett as a preamplifier between my computer and amplifier. The preamp gets power only through a USB connection. Sometimes when I touch the cover of the preamp, I can hear a ...
0
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1answer
134 views
Why more voltage after full rectification
I used 105j 400 V capacitor. Connected it to 230 V AC. Then I measured voltage after capacitor and it was reduced to 116 V AC.
Then I checked voltage after 4 diode rectification, here measured 204 V ...
0
votes
2answers
77 views
RCA shocking myste [closed]
I got a zap from the shield of a RCA cable from my TV to DVD player(both TV and DVD do not have a ground terminal on the outlet plug).
I measured the metal case to ground and I got a reading of 50V. ...
0
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0answers
72 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 ...
1
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2answers
648 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 ...
6
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3answers
4k 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
90 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 ...
1
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3answers
336 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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2answers
207 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
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1answer
52 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
88 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
245 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
83 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
votes
2answers
199 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
113 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
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1answer
1k 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
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3answers
3k 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
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2answers
293 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 ...
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0answers
89 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
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2answers
72 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 ...
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2answers
6k 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 ...
1
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6answers
2k 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 ...
57
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6answers
18k 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 ...
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3answers
3k 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
227 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 ...
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3answers
622 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
1k 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 ...
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1answer
1k 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
616 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 ...
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0answers
220 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
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2answers
290 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
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1answer
170 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 ...
