If you close the circuit breaker can it still shock from capacitors?
this post was submitted on 17 Dec 2023
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Slightly. If you were concerned you could bridge the contacts with an insulated screwdriver or something.
It's probably not something I would be concerned about unless this is a more powerful charger. It's too blurry to see but even the large electrolytic doesn't look big enough to be worried.
I wouldn't experiment with such a malfunction when the unit is plugged in. The best solution is to de-energise the house, if you have experience with the electrical panel, and then manipulate to remove the broken parts from the socket.
Not if the phone was plugged in. The capacitors would drain almost immediately.
Or just throw down a big rubber mat to pull then out
And this, among many other reasons, is why you don't buy cheap knock off power supplies
Getting harder every day. People think Amazon if full of fakes. As if Walmart, target, Best buy, [big shop here] doesn't also get shitty merch from the lowest bidder.
This, among many other reasons, is why you have switches per-plug rather than having to either risk electrocution or knock all your sockets offline while you unplug this
Never knew those lads were so... complicated?
There's a whole protocol for talking to supported devices so they can negotiate power delivery.
That can be done with a single chip. What's actually complicated here is the switch-mode power supply itself.
It's how you get a 90% efficiency vs a 10% efficiency from linear power supplies (transformer, full bridge rectifier, and a big ass-capacitor, then if you need a stable voltage, a voltage regulator, which makes things even less efficient). The benefit of linear supplies is that it's very easy to produce very clean power for analog electronics, but digital electronics have a lot more wiggle room for noise in the power. Well designed SMPS have both low noise levels and also hogh efficiency. Those are more expensive :P.
There's a field of engineering specific to power electronics. It can get super complicated. I don't understand a lot of it myself.
Check out bigclive on YouTube, he takes apart lots of electronics and breaks down the circuits. He investigated lots of cheaper, dodgier stuff too. Like lamps with usb ports that are mains voltage when the lamp is plugged in to recharge. Fun times.
Or electroboom if you want to see what happens when you lack care around those same electronics
I remember his video about people burning wood with microwave transformers. 2-3kV is some lethal shit. Some lady, one of the lucky survivors of an accident, had her hand mutilated as a result of messing with that kind of voltage.
After looking at RAM, clock speed, program storage space, and a few other components, Heller concluded that today's USB-C chargers are more or less 563 times faster than the Apollo computer.
https://www.popularmechanics.com/technology/a30916315/usb-c-charger-apollo-11-computer/
I record every time I unplug my phone charger for posterity too.
Prob fell off the first time so they put it back on and recorded it.
This reminds me of my life.
It was getting better after the circuit board came off. (also: gifs that end too soon)