Questions tagged [lightning]

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6
votes
4answers
893 views

Is it possible to measure lightning discharges as Nikola Tesla? [closed]

Nikola Tesla stated in his patent, Art of Transmitting Electrical Energy Through Natural Medium, that he used sensitive instruments to measure lightning discharges: In the course of certain ...
0
votes
1answer
93 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 ...
0
votes
1answer
31 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 ...
0
votes
0answers
100 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 ...
0
votes
3answers
147 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 ...
0
votes
2answers
100 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.
0
votes
1answer
90 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
votes
1answer
58 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 ...
1
vote
3answers
143 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 ...
0
votes
2answers
44 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
votes
1answer
115 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 ...
0
votes
1answer
66 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
votes
2answers
615 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?...
-2
votes
2answers
1k 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
votes
1answer
121 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
votes
1answer
49 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 ...
5
votes
2answers
215 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 ...
0
votes
2answers
96 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
votes
2answers
116 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 ...
2
votes
2answers
273 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 ...
0
votes
2answers
64 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 ...
5
votes
2answers
3k 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 ...
0
votes
2answers
228 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
votes
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 ...
2
votes
3answers
140 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 ...
0
votes
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 ...
0
votes
1answer
141 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 ...
1
vote
1answer
84 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
votes
1answer
122 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
votes
1answer
315 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
votes
1answer
176 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.
2
votes
1answer
228 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
votes
1answer
325 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 ...
1
vote
2answers
832 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
votes
1answer
79 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
votes
2answers
870 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
vote
1answer
382 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 ...
0
votes
3answers
127 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?
1
vote
2answers
724 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
votes
1answer
238 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
votes
1answer
304 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
votes
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
votes
4answers
519 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
votes
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 ...
-1
votes
1answer
110 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
vote
3answers
398 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
406 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 ...
16
votes
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
votes
1answer
171 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 ...
4
votes
2answers
12k views

direct ZigBee communication with Philips Hue smart light bulbs

Philips Hue light bulbs use a Bridge(transmitter) to connect between your network and their smart lights via a ZigBee protocol called Light Link. Can you control the lights directly with your own ...