Questions tagged [shock]

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24 VDC system and metal ground

I've built a rubber tracked mobile robot and it has a metal chassis. I use a 24 VDC 30 Ah battery to power a system which includes two DC motors, motor controllers, an industrial PC and some sensors. ...
Marcus Barnet's user avatar
0 votes
1 answer
47 views

Floating output voltage in USB chargers?

A USB charger is usually galvanically isolated from mains for safety reasons. If I touch the output connector while standing on the ground (i am at earth potential), will I get a shock? I think yes, ...
user2276094's user avatar
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1 answer
221 views

How to create an electric fence for slugs and snails using a car battery

There are electric fences that are made using a regular 9v alkaline battery and two wires. One wire connects to the positive terminal, the other wire to the negative, and they are wrapped around the ...
oak savannah's user avatar
4 votes
1 answer
881 views

Why do I get shocked from my laptop? How do I stop it in my own designs? [duplicate]

Recently, I noticed my MacBook gave me a small shock when it was plugged in and I only touched the very corner of it with my palm. It was fine if I gave it enough contact by resting both palms on the ...
Klumpy7's user avatar
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0 answers
68 views

Inrush current limiter thermistor acting up

One of the power amps I am working on uses a thermistor for inrush current limiting (SL15 25003) as shown in the schematic below (ICL1). When I was testing the unit it seemed to me that there was some ...
Zen Max's user avatar
  • 13
4 votes
5 answers
2k views

Do we really need the metallic chassis to be grounded if it is coated with a non-conductive paint?

As per my understanding, a metallic chassis can result in a shock only if two failures happen simultaneously: Live wire ('hot') insulation wears off and gets in contact with chassis. Chassis outer ...
Dynamic_equilibrium's user avatar
9 votes
6 answers
3k views

Are GX ("aviation") connectors unsafe for high voltages?

GX connectors (unofficially called "aviation") are used for a wide variety electrical applications, including supplying power to soldering irons and motors. Usually, the voltages are low, ...
user148298's user avatar
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0 votes
2 answers
159 views

How do I make a small shock circuit to incorporate in my artwork?

Essentially, I am making a sensory art piece involving many different materials that all feel different to touch. I want to incorporate a small section of metal that will deliver a small, ...
JSTN's user avatar
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1 answer
99 views

Electric Shock off spinning motor

This large blower powering an inflatable structure has no on/off switch, requiring the actual power plug to be disconnected to power down the item. I frequently get a painful shock off the plug, and ...
MarktheSpark's user avatar
0 votes
1 answer
139 views

What does it take for 220V AC to shock you?

After heavy rains, we had severe water logging in our lawn and front yard. My brother got an AC submersible pump from the market, small thing (sits on the palm of my hand), not great flow rates (maybe ...
DribbleNibble's user avatar
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1 answer
106 views

As in the picture when I connect the gnd of hlw8012 to the gnd of esp8266 I get electric shock .what should I do now

I'm working on a project based on Iot so I was using hlw8012 for power monitoring and after connecting the IC module to the esp8266 whenever I touch the Esp module I get electric shock . What should I ...
Tony's user avatar
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1 vote
3 answers
259 views

How to fix the shock I was getting from my 3D printer?

Our house do not have proper grounding, only hot and neutral wires are present. Now, every time I touch the chassis of my 3D printer it shocks me. I tested the ac voltage between the chassis and the ...
Kurisu's user avatar
  • 11
0 votes
1 answer
53 views

"buzzing" sensation from a touch dimmer when touched with wet hand

My house has the above touch dimmers from the late 70's or 80's. They usually give off an imperceptible buzz or no sensation when used. Today I unthinkingly touched one with a wet hand and felt a ...
Jos Dalkin's user avatar
0 votes
1 answer
169 views

Electric shock detector

I am a software engineer and totally new in electric field so that this question may be silly. Can we develop a device that would turn on an LED on or make sound when the holding person gets shocked ...
Peter Lee's user avatar
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1 vote
2 answers
361 views

Would I typically get a shock from touching two live wires separated by ~240 V with each hand if my skin were completely dry (assume I'm ungrounded)?

As the question asks, would I? I'm aware that one should naturally never actually try this, and that people for the most part do get shocked when accidentally doing this, but why exactly is that? I ...
Outis Nemo's user avatar
2 votes
2 answers
196 views

Is there a circuit that I can build to allow this alarm device to operate a relay?

I would like to add a relay output circuit to this alarm device to allow it to operate my car horn. The alarm device has 4 different tunes/tones. Each tone plays for about 5 seconds and the next 3 ...
Nar T's user avatar
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-4 votes
2 answers
221 views

Will I feel a shock using this circuit?

I'm a programmer and new to electronics. I am trying to achieve at least slightly shocking my finger using this circuit and want to make sure it works before buying the stuff. It will be a punishment ...
Pepa Strauch's user avatar
0 votes
1 answer
133 views

What causes a person to get 'blown across' the room in an electric shock?

Recently I came across this article of a man being 'catapulted' across the room: https://news.sky.com/story/desperate-man-was-dead-for-two-minutes-after-being-electrocuted-while-stealing-scrap-to-pay-...
Mary Mayhem's user avatar
0 votes
1 answer
159 views

Large series resistor to protect from shock

I built a high voltage generator and want to protect myself against shocks. Would putting a large series resistor on the powering circuit be sufficient to protect me in those cases: I build a large ...
JeanMi's user avatar
  • 157
1 vote
4 answers
10k views

Can you touch a live wire without being shocked?

I understand many questions about electric shock from live wires and I apologise for adding to that list but after reading many of them I still have my concerns. From what I have read from some of ...
Swiss Gnome's user avatar
0 votes
1 answer
98 views

Electricity to ground

I was working on a games console and accidently got shocked by a capacitor. I was wearing a ESD strap that was connected to the back of my pc which is connected to a powerboard and to a grounded power ...
alfredo2g90's user avatar
0 votes
1 answer
197 views

I got a shock from a metal switch powering mains

I've been working on an Arduino project which controls the temp of a crock pot and I wanted to incorporate this cool looking illuminated metal toggle switch. https://www.alibaba.com/product-detail/...
JayLee90's user avatar
-8 votes
4 answers
1k views

What is the minimum voltage to shock someone? Is a transformer needed or can I use a battery?

What is the minimum voltage to shock someone (on the arm, leg, or finger, not on the tongue). Could this be achieved with just a battery and without a transformer? Is shocking someone just a matter of ...
LDM31's user avatar
  • 13
0 votes
1 answer
118 views

Is it the current that kills, or other factors? [duplicate]

Recently I got into an argument with my physics teacher over a simple subject, with this question - "What kills you, the current or the voltage?". I argue that it is the voltage that kills, ...
James Barnett's user avatar
0 votes
1 answer
160 views

Risk of getting shocked by ECG leads? [closed]

I have recently come into possession of a GE patient monitor (Eagle 4000) which looks structurally sound, probably decommissioned because of its age. It seems to work without a hiccup but I remembered ...
transforman's user avatar
0 votes
1 answer
103 views

How can I get a full guide to choosing the right IC package?

I often find a variety of IC packages options for one chip. I select among them randomly according to the availability, despite my concern about the vibration and shock reliability I googled ...
Haitham AlHazmy's user avatar
1 vote
3 answers
5k 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 ...
Alan Wolstenholme's user avatar
0 votes
0 answers
43 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 ...
SOUHARDHYA PAUL's user avatar
0 votes
1 answer
286 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 ...
Steve's user avatar
  • 101
0 votes
0 answers
264 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 ...
Steve Osten's user avatar
16 votes
4 answers
4k 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 ...
PauerEightySix's user avatar
1 vote
1 answer
640 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 ...
bform's user avatar
  • 11
0 votes
2 answers
70 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 ...
Damn Vegetables's user avatar
4 votes
3 answers
509 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 ...
Zsolt's user avatar
  • 233
0 votes
3 answers
155 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 ...
Justin Montego's user avatar
2 votes
3 answers
1k 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 ...
Rajdeep Sindhu's user avatar
0 votes
1 answer
5k 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 ...
Antonio Davila's user avatar
1 vote
3 answers
200 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 ...
Mr_Random_Guy's user avatar
13 votes
11 answers
12k 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 ...
DeadSec's user avatar
  • 377
0 votes
1 answer
339 views

Electrifying a cage for rodent problem [closed]

I have a rodent problem which traditional traps and various other measures have have not been able to solve. I want to try to electrify a metal cage which I have. I don't believe that is as simple as ...
Alan A's user avatar
  • 161
0 votes
1 answer
152 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=...
zakaria kais's user avatar
0 votes
1 answer
124 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 ...
bkoodaa's user avatar
  • 101
0 votes
1 answer
2k 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 ...
sangpo Sangpo's user avatar
2 votes
2 answers
2k views

Is it normal to feel shocks on corner of laptop?

When working on my laptop connected to power and lightly touching the right corner with my forearm, I can feel small shocks which are uncomfortable, almost painful. Is this normal? It happens under ...
Roman Plášil's user avatar
0 votes
2 answers
130 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. ...
Karen's user avatar
  • 9
0 votes
0 answers
122 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 ...
BHU1 LORD's user avatar
  • 103
1 vote
2 answers
3k 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 ...
Peter - Reinstate Monica's user avatar
8 votes
3 answers
6k 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 ...
丶 Limeー来夢 丶's user avatar
1 vote
0 answers
282 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 ...
Nau's user avatar
  • 515
1 vote
3 answers
1k 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 ...
Nau's user avatar
  • 515