Questions tagged [lightning]
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0answers
28 views
Is it possible to strobe a 12v 50 watt flueorescent light bulbs ?at 20 hz [on hold]
Is it possible to strobe a 12v 50 watt flueorescent light bulb
0
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1answer
68 views
Lightning protection for TV Antenna
I live in an area with frequent lightning strikes. Occasionally people get killed due to those - specially when strikes enter house through TV antenna cables. My house is quite tall and seems to be ...
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1answer
26 views
Replacing lightning connector with usb-c connector in lightning earphones [closed]
I have a lightning earphones, Sennheiser ambeo smart headset.
https://en-us.sennheiser.com/finalstop
The cables are yellowing, and I wanted to replace them, also I got tired of using this on my ...
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0answers
55 views
Earthing for Satellite Dish
A friend who is an electrical engineer (heavy current) told me to earth my satellite dish and its fixing pole against lightning, using a thick copper cable (6 sq.mm) and an earth spike. He also said ...
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3answers
123 views
Voltage, inductance & lightning in a length of wire
I initially got the idea after watching the famous Mike Holt video on grounding.
https://www.youtube.com/watch?time_continue=138&v=mpgAVE4UwFw
Mike warns that longer wires to ground rods can ...
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2answers
60 views
Does a ground strap protect my car from a lightning strike?
I was wondering if the ground strap can also protect the electrical/electronic parts of a car when a lightning strikes it.
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1answer
88 views
Is 3.5mm jack to female Apple Lightning adapter technically possible?
I couldn't find a trustworthy source for whether Apple EarPods are digital or analog, but I'm pretty sure it is digital as most teardowns show a chip on it that might be a DAC. Should this make ...
0
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1answer
52 views
Lightning protection system [closed]
When I have a lightning protection system installed on a building roof top , what is the best way to bond the electrical equipment on the roof? Is it ok to directly bond it to the down counductor of ...
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3answers
129 views
Can lightning damage electronics via a ground connection?
Often when we think of a lightning transient, the idea is that the lightning strikes a power line and propagates through the hot/neutral or 3 wires of 3-phase system. There is also induced current ...
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2answers
40 views
How does the chassis ground on an automobile protect against lightning
How does the chassis neutralize the excess of electrons from a lightning strike?
6
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1answer
114 views
Sparks on grounded metal bodies on lighting strikes in the nearby (two miles)
I have a strange phenomenon in our mountain cabin, on the Italian alps: lightning strike on the nearby (not so near: < 2 miles) causes audible / visible sparks on:
electric / fire wood water ...
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1answer
59 views
A question about lightning protection for a sensor mounted outdoors
There is an ultrasonic-windsensor which will be mounted on a bridge in winter. Maybe several of them.
It seems like for outdoor use this device should be earth grounded(probably through mains earth? ...
2
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2answers
512 views
Why does lightning hit a plane when it's not grounded?
The title is the question. Is it something to do with batteries on a plane? I’ve tried Google but all the listings are “what happens when lightning hits a plane”
So why does it happen I want to know?...
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2answers
663 views
How to make the lightning port of iphone output 5V power? like OTG on android phones [closed]
How to make the lightning port of iPhone output 5V power?
How to make the lightning port of iPhone output 5V power?
Just like the android phone, if I connect the ID pin to the ground then the phone ...
0
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1answer
116 views
Question about ESD wristband and lightning
as far as I know all ESD wristband's ground connection has an 1M ohm resistor built in for safety. So what would happen if I am working on lab wearing ESD wristband which is connected to the home ...
0
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1answer
45 views
Are there disadvantages to this method of testing building wiring after a lightning strike?
A lightning strike can damage wiring in a building. Specifically it can damage the insulation on the conductors, resulting in arcing and fire, either immediately or some time after the strike. I've ...
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2answers
180 views
Identification of a part on a power line's lightning arrester
I recently spotted an arrangement of wires on a lightning arrester on top of a power line. The power line is IIRC a 110 kV, 16.7 Hz, two phase line for railway systems.
The lightning arrester is of ...
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2answers
81 views
Automatic cut mains power on a thunderstorm
I am a software engineer with only a basic experience with electric/electronic engineering.
I live in a rural area subject to thunderstorms, my house is the end of the line from street poles. It's ...
0
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2answers
99 views
How does a neutral wire add any protection from near-by lightning strike
As an amateur radio operator for 60 years now I have been aware that a major worry vis-a-vis lightning is not so much the very rare "direct hit" that blows up the house, but the far more common "near ...
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2answers
269 views
Lightning protection for underground loudspeaker wires
I am tasked with running a loudspeaker to a remote building. The total run length is around 275 feet, with the outdoor portion being around 165 feet. The cable is Cat5e 24awg unshielded, silicone ...
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2answers
60 views
detection of dc pulse
following is a pulse which i obtained from a circuit and i want to get a count when the pulse is initiated. My circuit is to detect a lightning and i obtain this pulse in our high voltage laboratory ...
4
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2answers
2k views
How to add lightning protection on a PCB?
Currently, I have the PCB design ready, and I want to add lightning protection to the PCB. Can someone suggest a good, low cost solution for it? I am new to adding lightning protection.
One of the ...
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2answers
195 views
Lightning Rod Hack By Using Satellite Dish
Our condos' rooftops don't have lightning rods per se, but they do have satellite dishes and AC units mounted there as well. Would these, if properly grounded (and these should be) act as lightning ...
0
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1answer
41 views
Radio Noise from Storm
I drove through a Wyoming thunderstorm today. Just for fun, I set my AM car radio to the top end of the AM broadcast band where there was no station audible. Sure enough, I heard the lightning ...
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3answers
131 views
Lightning detection
I am planning to build a device that has a capability of early detection of a lightning. Also we want to measure the magnitude of the lightning and can anyone suggest a way to measure the magnitude of ...
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3answers
1k views
What could happen if a lightning strikes a car with a battery connected to the chassis ?
I was wondering today what could possibly happen if a lightning strikes my van where I have a 12V battery negative connected to the chassis. Could that destroy the battery or start a fire?
In order ...
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1answer
136 views
Can overhead ground wire of major transmission lines prevent induction through solar storms?
As I understand it the overhead ground wire found on major transmission lines is placed there in the event of a lightning strike which prevents a surge in the phase conductors. My question is, could ...
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1answer
76 views
How to initiate a Lightning connection
I'm trying to take the first step to establish a connection with an iPhone using the Lightning port. I'm using the Lightning A male connector body, which I believe should set the iPhone to be a USB ...
0
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1answer
121 views
ESD damage due to earth potential drop?
When lightning strikes or the earth wire (from the wall outlet) suddenly gets charged negatively for whatever reason, then, in theory, can it cause ESD-damage to a PC?
Because the grounding wire (...
0
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1answer
278 views
Known alternative to DMX512 & RDM
Hi does anybody know of any other lighting communication protocol other than DMX512 and RDM?
I'm currently evaluating protocols and would not want to miss potential candidates.
Thank you.
0
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1answer
175 views
Neutral for 3 phase machines
When do we have to use a TP circuit breaker, and when do we have to use a TPN breaker, and why?
I am specifically referring to 415 VAC 3 phase, 230 VAC in single phase, 50 HZ.
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3answers
312 views
Lightning turbine? Can lightning be divided this way? [closed]
Can lightning be collected and divided (to lengthen pulse) through different lengths of heavy gauged wire proportioned to carry the current into a large but simple electromagnet? Then could that ...
2
votes
1answer
200 views
How the lightning arrestor works in an aircraft?
The doubt may look silly. I referred the article about this in http://www.scientificamerican.com/article/what-happens-when-lightni/
It says that the current will exit through some extremity like tail....
0
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1answer
295 views
Can you safely use the telephone during a lightning storm? [closed]
Everyone's heard the lecture on how you shouldn't use the telephone in a storm unless it's an emergency, due to a risk of electrical shock. My understanding is this is true and numerous people have ...
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2answers
798 views
Connection to ground for a Cat5e Shielded outdoor rated cable
My ISP installed the cable modem in my entertainment room. I am trying to have internet also in my STUDIO with an access point to broadcast a second WIFI from there to other parts of the house. (My ...
0
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1answer
78 views
What are some disadvantages of having exposed pins on a connector?
For example, the Apple Lightning connector has exposed pins. What are some disadvantages of exposed pins besides corrosion (and shorting out the power supply when not in use, which shouldn't be a ...
-5
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2answers
825 views
Electrical Engineering Puzzle [closed]
I encountered a puzzle for which I'm sure of the answer. It's simple:
Which cow will survive? Why?
Assume that single strike of lightning is 10^20 electrons.
1
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1answer
372 views
thin wire on high tension cable
if the thin wire is use for protection from lightning strike in high tension tower, then tell me that how a thin wire can withstand a high voltage lightning strike.It must be melt when light strike on ...
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3answers
126 views
Should I disconnect appliances if there is lightning? [closed]
Is it safe for electrical appliances to stay connected to the socket when there is lighting, or is it better to disconnect them?
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2answers
701 views
USB 3.0 wires for data transmission
USB 3.0 has 9 wires.
4 from USB 2.0 (VCC, GND, D+, D-)
+ 5 new for super (SSTX+/-, SSRX+/-, GND)
My Understandings: (these may not be correct)
- USB 3.0 is separated from USB 2.0 and USB 3.0 ...
2
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1answer
230 views
Experiment to capture electrical spark
Today my 8-year-old son comes home from school telling me he learned about lightning rods, and he says, "What if we could capture the electricity from lightning and use it to power stuff?" I'm aware ...
0
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1answer
284 views
Is it possible for lightning strike to travel up ground / earth pin on a mains outlet?
I live in a country that follows the UK mains specification, where there are 3 pins on a wall outlet with the topmost pin being earth/ground. Now, is it possible that during a lightning strike, extra ...
70
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10answers
14k views
Why did LEDs take so long to appear as light bulbs?
LEDs are an old technology, why did the industries take so long to put them into light bulbs? Was there any technological gap missing?
2
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4answers
492 views
Lightning surge protection
I'm considering buying a lightning protection unit for my electronics at home and would love some assistance in understanding how it all works. I live in an area where lightning strikes are very ...
0
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1answer
127 views
Designing a switch box for lights
I need to build a box with 12 momentary push button switches for 12 separate lighting sources. I plan to plug 12 fluorescent lights into the box, then I'd like to control the lights with the push ...
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1answer
108 views
Will a 110-220v to 12v converter work with a DC 12v 3w LED bulb? [closed]
I'm planning to create some wall lights using these LED bulbs. Would I be able to just use any 110-220v to 12v converter to power this at home? I live in the US (120v).
I was thinking of using this ...
1
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3answers
367 views
New led lights flickering in shop
I have replaced several light fixtures with LED in my company. The 400 watt hi-bays I replaced with 95 watt LED. They work great.
I replaced a set of office lights that were track halogen with 7 watt ...
4
votes
3answers
386 views
Why is USB type C connector hollow?
If we look, for instance, at a Lightning cable, its connector is shaped like "—", with receptacle being "=". Apparently, this construction contributes to durability, to the ease of use, and lowers ...
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3answers
3k views
Why is the power consumption of electrical lamps specified in kWh/1000h?
This is the box of a LED spot I just bought. I'm wondering why the power consumption is measured in kWh/1000h and not simply in Watts.
Edit:
The labeling standard can be found here. (Guide for the ...
0
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1answer
170 views
Amount of light by an LED
I am supposed to use an light having the following specs. as described in the below statement.
"A red light, equivalent in its luminescence to a 21 W light bulb is to be used."
On an average how ...
