2019-06-26 19:31:07
seems i will continue to be confused about what is usb, what is pci-e over cable, what is thunderbolt and what is displayport
https://www.anandtech.com/print/14590/vesa-announces-displayport-20-standard-bandwidth-for-8k-monitors-beyond VESA Announces DisplayPort 2.0 Standard: Bandwidth For 8K Monitors & Beyond

Rotonen
2019-06-26 19:31:45
i can see the discussions of 'yes, plug the disk into your GPU display out for mining, yes, forreals'

Rotonen
2019-06-26 19:33:48
also as that's now essentially usb, does it or does it now do power delivery too

Rotonen
2019-06-26 20:31:17
Yeah, my mac book pro at work has a USB-C that charges the laptop, runs a giant display and other thigns

Fireduck
2019-06-26 20:31:21
it is basically insane

Fireduck
2019-06-26 20:41:14
laptops are all sorts of mad anyway

Rotonen
2019-06-26 20:41:31
the processors ramp up from 2A power draw to 80A power draw in an actual jiffy

Rotonen
2019-06-26 20:41:41
and the power delivery keeps up

Rotonen
2019-06-26 20:42:05
pretty much madness

Fireduck
2019-06-26 20:43:36
the only other category of device i've seen do that is an ohm sausage

Rotonen
2019-06-26 20:44:20
Is that what you call plain barrel resisters?

Fireduck
2019-06-26 20:44:34
no, it's an electrical engineering student trick

Rotonen
2019-06-26 20:44:47
you run household wall socket AC through a sausage

Rotonen
2019-06-26 20:45:17
electrical engineering tricks are usually great and terrifying

Fireduck
2019-06-26 20:45:25
the system is self limiting, the current and resistance spike up as the sausage cooks pretty quick before becoming an insulator before the circuit protection trips up

Rotonen
2019-06-26 20:45:30
quite safe

Rotonen
2019-06-26 20:45:56
and of course one measures the power curve for fun

Rotonen
2019-06-26 20:46:00
so when the current drops, it is done?

Fireduck
2019-06-26 20:46:08
yes

Rotonen
2019-06-26 20:46:24
it also has an analog built in display for the doneness

Rotonen
2019-06-26 20:46:39
as in it's pretty obvious it is now hot, crispy, juicy and rather edible

Rotonen
2019-06-26 20:46:39
right

Fireduck
2019-06-26 20:47:39
great fun for the freshmen to marvel at

Rotonen
2019-06-26 20:49:56
there are a couple of tricks to it in regards to shaping the plasma channelling (as in sparkthrough prevention), but if one thinks it through a few times and remembers murphy, one is fine

Rotonen
2019-06-26 20:50:12
so maybe do not run off to try it en masse :stuck_out_tongue:

Rotonen
2019-06-26 20:52:16
here's a more exterme demo from an old colleague of mine
https://www.youtube.com/watch?v=u6htxWO9GNI YouTube Video: ohminakin paisto motilla (ohm sausage)

Rotonen
2019-06-26 20:53:41
featuring the above mentioned plasma channeling

Rotonen
2019-06-26 20:53:49
(gone wrong)

Rotonen
2019-06-26 20:56:00
https://www.youtube.com/watch?v=r4oPXHWrqVI&t=65s YouTube Video: Hermes' Bureaucrat Song

Fireduck
2019-06-26 20:56:05
it even has a finnish wikipedia entry, maybe google translate will manage :stuck_out_tongue:
https://fi.wikipedia.org/wiki/Ohmimakkara Ohmimakkara (myös sähkömiehenmakkara) on temppu, jossa makkaraa kuumennetaan johtamalla 230 V sähkövirtaa pistorasiasta sen läpi. Menetelmä voi olla hengenvaarallinen.

Rotonen
2019-06-26 20:56:43
ah, 230V, I was wondering

Fireduck
2019-06-26 20:56:59
should work just as well with ~100V

Rotonen
2019-06-26 20:57:08
people do that off car batteries as well

Rotonen
2019-06-26 20:57:26
voltage goes distance, amperage heats

Rotonen
2019-06-26 21:04:48
@fydel you got time this coming weekend to look at how to have munin not devnull the history beyond one year?

Rotonen