The spirit that moves us forward as a people.
I have converted a load of stuff to run on USB-C PD.
My most useful one is a travel CPAP. It consists of a USB PD trigger and a boost converter to step 20V to 24V. The trigger board is integrated into the USB-C connector and there is a small 3d printed box for the boost converter inline to contain it and provide space to adapt the output to the proprietary DC connector. Anyone wanting to DIY something similar can find PD triggers or PD trigger cables on aliexpress or ebay easily.
There are tons of products right now on Amazon and elsewhere that are basically nothing more than USB-C PD input, DC barrel plug output. Super useful, especially paired with a compatible power bank. Unfortunately for some reason all the suppliers set them at 20v despite the ICs they use in them being able to request a different voltage.
Buying USB-C PD stuff on Amazon scares me. USB-C is enough power that there is a serious risk of fire or other bad stuff happening with low quality parts. With Amazon's counterfeit problem, this feels like rolling the dice.
I literally couldn't use it on an airplane outlet today because it drew too much power.
Try plugging it into the MacBook switched off, let it charge a bit, and then boot the MacBook but keep heavy gaming to a minimum, and all should be okay.
It's not like I remember them! You'd think it would at least look like "an oven". That looks like a clock radio from 1995!
I saw this posted on Twitter today: https://mobile.twitter.com/taresky/status/115938806298554777...
The keyword is "PD 诱骗头", which is a small converter to trick the power supply to output at full capacity. Not sure if it's safe, but it's tempting to replace the big power adapter that comes with NUC with a small GaN USB C PD adapter.
Edit: a link to this kind of "PD 诱骗头" http://www.chongdiantou.com/wp/archives/10456.html
This is likely just an actual PD controller that always tries to negotiate the maximum power. Nothing wrong with that.
The second link if it's actually outputting max voltage/current over the USB Type-A: that's probably not safe. I don't think any USB Type-A connector is rated for 5 amps. Don't think there should be any issue with the voltage, besides the fact you'll fry any regular USB device if you plug it in...
A hypothetical design could use 1000 volts at 5 amps. By having the power conductors isolated from ground, an earth impedance checker could detect any human body parts coming into contact with the power lines, and as long as the cable capacitance is required to be kept low, and the cutoff within a few hundred microseconds, it would be perfectly safe for your child to bite through the cables.
The same design wouldn't require extra costs for cheap devices either - they needent bother with electrical power isolation, but would just end up limited to 20 volts.
Minor modifications to the existing connector would let it withstand 1000v
Also, the lower voltage means you need more current to deliver the same power, which in turn means you need thicker wires.
Also, since USB-PD can negotiate the voltage, each USB-C outlet needs its own regulator, and you can't use a shared 20V line for multiple outlets.
So the best way to implement something like that would be to stay with the 110V or 220V system, and just install USB-C power supplies that are hidden in the wall, like they already exist for USB A, eg