Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [lightning]

98 questions
20
votes
3 answers

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 application of the commision regulation (EU) No.…
Lior Kogan
  • 361
  • 1
  • 2
  • 10
14
votes
3 answers

Why do thunderstorms knock out power?

It isn't like lightning strikes the wires. And surely the whole apparatus is designed to be water-proof. So what is it that causes power outages during thunderstorms?
Bob
  • 149
  • 1
  • 1
  • 3
10
votes
4 answers

Why are modern telephone lightning arrestors less prone to (rectification) RFI problems than old ones?

I was reading about telephone lightning arrestors in my ARRL RFI Book (first edition, copyright 1998), in chapter 9 "Telephone RFI" (by Pete Krieger, previously WA8KZH, now K8COM) and on page 9.6, the following is stated (emphasis mine): The…
MicroservicesOnDDD
  • 2,557
  • 1
  • 13
  • 48
7
votes
6 answers

Can lightning strike into the phone line damage electronics in the house through the ADSL modem?

I was always wondering about the following: If lightning strikes directly into the phone line outdoors, can the excess power coming from the phone line jump over the switching power supply of the ADSL modem into the mains in the house and damage any…
adamsfamily
  • 217
  • 2
  • 7
6
votes
3 answers

Is it possible to measure lightning discharges as Nikola Tesla?

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 investigations which I carried on for the purpose of…
Marino Klisovich
  • 265
  • 1
  • 11
6
votes
1 answer

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 heater pipes (very frequently) LED spotlights…
SpecialFx
  • 61
  • 3
6
votes
2 answers

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 methods I have found is ESD diodes. Currently the…
Bhautik R.
  • 67
  • 2
  • 7
6
votes
2 answers

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 xBee radio? I'm most interested in creating my own…
hydronics
  • 93
  • 1
  • 1
  • 6
5
votes
2 answers

Protecting a tethered floating device from Lightning strikes

I am building a device, current as a proof of concept, but I would like to have it in place for a long period of time (over a year) with minimal maintenance. The device is powered by an array of solar cells, contains a microprocessor and other…
topherg
  • 231
  • 2
  • 8
5
votes
3 answers

The chance of a lightning strike - reduced or increased?

If I connect the receiver and TV body to the earth, does it reduce or increase the chance of lightning strikes the dish antenna?
Merlin
  • 73
  • 4
5
votes
2 answers

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 a linear type on top of the power line…
Ariser
  • 3,846
  • 3
  • 23
  • 43
5
votes
4 answers

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 common and would like to buy/install something…
MojoJojo
  • 153
  • 3
5
votes
3 answers

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 production costs. USB C, on the other hand, opted…
Ronald Wayne
  • 53
  • 5
5
votes
2 answers

Calculate number of photons of a light source given the lumen and the color spectrum

Is there any program that given the lumen and the colour spectrum (relative intensity at any wavelength) of a light source and it outputs the total amount of photons per wavelength?
kogrja
  • 51
  • 1
  • 1
  • 2
4
votes
2 answers

Preventing Arduino from getting lightning strikes and protecting it

I want to use an Arduino as a weather station and I want to put it high up in a tree. It should be independent and powered by solar panels. This is where the problem starts. Lightning strikes occur pretty often in my area, and I assume the…
qwertz
  • 161
  • 1
  • 9
1
2 3 4 5 6 7