Woohoo! 32k achieved!!! Finally I can post some new rant without risking some sudden overshoot 😁

So putting celebrations aside for a minute, a while ago I've noticed a tingle when I stroke my finger across metal areas of my tablet, or the sides of my phone (which probably has metal near it too) while it's charging. And it's been bugging me ever since.

Now, some things to note are that it only happens when my feet are touching the ground though slippers, and that the frequency is so low that I can actually feel the tingle when I slide my finger across the material. This to me at least seems like electricity flows through me into ground, and touching the ground directly provides a path so easy for the electrons to run away that I don't feel it at all. But if I lift my feet off the ground entirely, I just get charged up and after that, nothing else happens.

So those are my ideas. The answers on the subject on the other hand.. absolute cancer. Unsurprisingly, most of them came from Apple users. Here's some of them.

https://discussions.apple.com/threa...
- I've not noticed it, but if you're concerned bring the phone to Apple for evaluation.
- Me too facing same problem.. did u visit apple care?
And one good answer at least...
- google emf sensitivity, its real. You are right, there is a small current flowing through your body, try to limit your usage. The problem with this issue is those who aren't affected (lucky ones for now) will tell you these products are 100% safe. To a degree they are, i used my ipod touch for about 2 years straight vwith virtually no symptoms. then the tingling started and it gets worse.You will get more sensitive to progressively less powerful things. I dont want to scare you but just limit your usage like i didnt do 🙂

Overall that discussion was pretty good actually, aside from "bring it to the Genius Bar, they'll know for sure and not just sell you another unit". But then there's Reddit.
https://reddit.com/r/iphone/...
- Ok, real reason is probably that the extension cord and/or outlet is probably not grounded correctly. Either that or you are using a cheap knockoff charger.
Either use a surge protector and/or use the authentic Apple Charger.
- It's not the volts that hurt you, it's the amps
- I think you are in deep love with your phone. That tingling sensation is usually referred to as "love" in human language.
- Do less acid, I would advise.

Okay, so that's the real cancer. Grounding issue sounds reasonable despite it being wrong. Grounding is actually not needed when your charging appliance doesn't have any exposed metal parts. And isolation from high voltage to low voltage side actually happens through things like routering holes into the PCB, creating spark gaps, and using galvanic isolation through things like optocouplers. As for a surge protector? I'm using them to protect my PC and my servers, but the only purpose they serve is to protect from.. you guessed it.. voltage surges, like lightning bolts hitting the grid. They don't do shit for grounding or reducing this tingle! What a fucking tool.

It's not the volts that kill, it's the amps.. yeah I'm sure that the debunking of that is easy to find. Not gonna explain that here. And the rest of it.. yeah it's just fucking cancer.

Now what's the real issue with this tingle? It's actually a Class-Y rated (i.e. kV rated) capacitor that's on the transformer of any switch-mode power supply, including phone chargers. If memory serves me right, it helps with decoupling the switching noise and so on. But as it's connected to the primary side of the transformer, if the cap is sufficiently large and you are sufficiently sensitive, it can actually cause that tingle by passing a fraction of the mains electricity into your body. It's totally safe though, as the power that these caps pass is very small. But to some, it's noticeable.

Hope you found this interesting! And thanks a lot for bringing me to 2^15. I really appreciate it ♥️

Recently I got into contact with the supplier of that 500W power supply that I've been servicing earlier, as I lost my pictures of the disassembly process with that craptacular Nexus 6P (didn't back them up.. terrible sysadmin, am I not?) and wanted to get the circuit diagrams of this thing in order to repair it. Sales girl wanted to give it to me but she'd have to ask the factory people.. and of course those people denied. As if I wanted to use this for anything but to repair my own bloody unit.. pieces of shit.

So I started considering buying a second one, in order to repair my current supply that I've already spent half a week on to document its components, desolder it, clean it up and resolder it (and replace some resistors here and there with better ones from my own assortment). And the project had to be paused because I lost the stupid pictures and couldn't for the love of God figure out how there's supposed to be a jumper near BD2.

Just now going through my notifs..
"Someone ++'d your rant!"
*clicks notif*
A rant that I completely forgot about.. https://devrant.com/rants/1757297. It's a perfect picture of the supposed jumper near BD2 that I was scratching my head about for so long. Turns out that it's just a dupe of the LF2 lines that I erroneously wrote down twice. DevRant, it's good for more than just venting, haha! Time to restore from a cloud backup XD