Questions tagged [electronics]

Electronics deals with electrical circuits that involve active electrical components and associated passive interconnection technologies. Use this when asking about electronic devices, electronic design and use (or misuse) of some devices.

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78 votes
3 answers

Does Electromagnetic Hypersensitivity (EHS) exist?

A recent article from Daily Mail cited the case of a woman claiming to be allergic to Wi-Fi, and that it could even kill her. This claim sounded ridiculous and absurd to me. Quoting parts of the exact ...
Victor Stafusa - BozoNaCadeia's user avatar
21 votes
4 answers

Can you harvest energy from radio transmissions?

This video gives instructions on building a circuit to harvest energy from radio waves in the air using some pretty straightforward circuitry. The creator has another video showing such a circuit ...
Catherine Hoy's user avatar
18 votes
2 answers

Does reading off a self-luminous tablet impact the quality of sleep?

I've heard claimed many times that reading an iPad in bed makes for worse sleep quality than reading a book or a Kindle with a bedside lamp, Possible explanations I've heard are because of the ...
Sklivvz's user avatar
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15 votes
1 answer

Do ultrasonic cat repellents work?

Amazon sells roughly 355 different cat repellent products but judging by the consumer ratings, most of them don't actually work -- and even those that do, could be correlation rather than causation. ...
Torben Gundtofte-Bruun's user avatar
9 votes
2 answers

Does a mobile phone send signals when it's off?

I've heard that mobile phones send signals to the tower even when the mobile goes off so your location can be detected. Is this possible?
rax's user avatar
  • 111
7 votes
1 answer

Do electronics have a startup cost?

There is a long held belief with some electricians that turning on an electric device requires a "startup" cost, or an overhead in the amount of power needed for it to start functioning normally. I ...
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