Learn Something New Today 09 May 2021

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shony · 2 Vues

How Safe Is The Phone Your Using? Interesting

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How safe is your phone did you know this?

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Simomax 2 mois depuis

This has everything to do with cheap, or failing USB PSUs. The high side is not isolated from the low side properly and a small amount of mains current is leaking to the low voltage side. See here: ⁣https://www.youtube.com/result....s?search_query=cheap
The tester he is using is a 50-60Hz nearfield probe (a volt stick) that is only capable of detecting ~40-100Hz frequency. Is 50-60Hz EMI (electromagnetic interference) dangerous? You tell me as you have been living with it since you were born. If you have one of these volt sticks, try this, turn on everything electrical you have in your house, crank it all to full. Then use your volt stick and go near your mains board, or around your walls where the wires are. If your volt stick goes nuts, and this scares you, there is a fix. Go to your electric meter, there should be a big fuse by it with some kind of wire seal. Cut the seal and pull the fuse. There, fixed.
If you don't understand what I am talking about, you don't understand what is happening in the video. Some people with a little knowledge are dangerous.

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Willzwozere 2 mois depuis

BT routers give it off too. Scary thing is, most people have electricity sockets beside the bed for a lamp etc. I suggest getting those safety plug in's they use for toddlers to try and cap the flow

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LovelyLondonLady 2 mois depuis

I have those caps, thank you for reminding me x

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Willzwozere 2 mois depuis

@LovelyLondonLady: your welcome, I would also recommend everyone having an EMF meter so they can detect where all the hotspots are in their home and place furniture accordingly. I'm not saying it will completely prevent exposure but it's got to help XX

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MoneyStinks 2 mois depuis

i think this is caused by the chargers not being properly grounded, so a small ac leakage current goes through the neutral return to the phone, then through anyone handling it who is in contact with the ground; with this ac current emitting electromagnetic radiation at 50 or 60 Hz. interestingly the chargers on the benches at the local apple store are properly grounded and there is no furry feel when the phone is brushed or touched while plugged in.

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Jigalo 2 mois depuis

you have got absolutely no idea about low frequencies.

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Simomax 2 mois depuis

@MoneyStinks, You are correct. It is caused by improper isolation between the high and low voltage sides. I, as well as other electronic engineers have tested many USB PSUs with a insulation meter and generally find the cheaper PSUs pass over a trickle of current from the high side to the low. Better PSUs (Apple, Samsung etc) don't do this at all, or is very very minimal. For anyone without test equipment wanting to test this theory, do this... Fill your bath, plug in your charger under test and phone, get in the bath, drop your phone in the bath and grab some copper plumbing whilst still in the bath. If you die, your charger is crap...... Don't actually do that, I was using it as an example of how the video is ridiculous. Some people with just a fraction of knowledge are very dangerous people.

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pipjohn 2 mois depuis

What utter and complete BOLLOCKS. What an ignorant load of rubbish. This is what happens when you give an uneducated idiot a measuring device that he does not understand the first principle of.

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Simomax 2 mois depuis

Bang on. It's like using a light meter for measuring ionizing radiation, and then saying 'oh look! is dangerous!' whilst the meter is in the sun.... A little knowledge can be very dangerous with some people.

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SpeakEZ 2 mois depuis

Stopped using mobile phones 18 months ago...Mine went on the blink and I was in a twist to get it fixed ASAP...then my inner voice said: "Leave it..." So I did...One of the best decisions I've made in a while...

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