Worked with an industrial robot one that had 700V 0.5F electrolytic capacitors on its power supply. Those things were massive.
Comment on xkcd #3106: Farads
ryannathans@aussie.zone 1 day ago
Haha that’s a good one
Capacitors are usually in the realm of pico to micro farads
A one farad capacitor charged to a respectable voltage would feel like a doomsday device in your hand
acockworkorange@mander.xyz 4 hours ago
Warl0k3@lemmy.world 2 hours ago
I was in the building when when a 3F 1200V capacitor, part of a multi-rack mounted capacitor bank, failed. It tore the 20cm mounting bolts out of the floor, launched the three-tonne rack hard enough to crack the ceiling and shattered every window in the facility. I want to say that afterwards I never broke the rule about not being allowed to enter the experiment room until the banks were discharged, but I’d be lying. Undergrads are idiots, and holy cow don’t fuck around with those caps…
SalamenceFury@lemmy.world 1 day ago
Wait so this is like one mistake away from turning that stickman into a fried stickman?
ricecake@sh.itjust.works 23 hours ago
Depends on the voltage it’s charged with, but household current would give it more energy than a shotgun has.
Realistically one would not do that unless you were dealing with something industrial. You would use them otherwise for things like dampening lower voltage systems that need a lot of current.
Closer to the danger level of someone holding two exposed wires plugged into the wall.
Treczoks@lemmy.world 18 hours ago
As long as the voltage is high enough, it does not need a whole Farad to wreck havoc. One of the first pranks they played on me in the lab was the “hey, catch” thing with a large, charged capacitor. Yes, I caught it. And I regretted it soon afterwards.
SaharaMaleikuhm@feddit.org 14 hours ago
Would that not leak a ton to the environment? Parasitic capacitance or smth. I ain’t not voltager.
ricecake@sh.itjust.works 13 hours ago
If we’re getting into practical realities it would probably pop and smolder long before it got fully charged. Capacitance is how much charge something will hold per volt. Doesn’t say anything about how much charge it holds before catching on fire. :)
kaidezee@lemmy.ml 19 hours ago
That is why I like supercapacitors.
DarkCloud@lemmy.world 1 day ago
Operation Sundial 2.0, electric boogaloo.
HakFoo@lemmy.sdf.org 1 day ago
You see low voltage ones for things like memory backup on hi-fi gear. I have some 3F/5v capacitors in an old Technics tiner.