DC current is 0 Hz.
Isn't 110V AC typically 0.06 kHz (60 Hz) in the US?
0.06 kHz < 40 kHz
Isn't 110V AC typically 0.06 kHz (60 Hz) in the US?
0.06 kHz < 40 kHz
However, the way people build power supplies has changed completely since the 1970s when I was a kid reading ham radio books that told you to get a big transformer, hook it to a bridge rectifier, and have a filter with some large capacitors in it. Today the state of the art is
https://en.wikipedia.org/wiki/Switched-mode_power_supply
https://en.wikipedia.org/wiki/Buck%E2%80%93boost_converter
My son was looking for an 18V-1A power supply for a guitar gadget and looking around the house he told me "there doesn't seem to be any connection with the voltage and current and the size of the supply" and it's precisely because of that revolution. Even if the input power is 60 Hz the power supply switches at 100 kHz or more which means the filter network is vastly smaller and you don't have the really dangerous big capacitors you might have seen in the power supply of a PDP-11 or something like that.
GaN > Transistors and power ICs: https://en.wikipedia.org/wiki/Gallium_nitride#Transistors_an...
Rectifiers > Rectifier circuits, Rectification technologies: https://en.wikipedia.org/wiki/Rectifier#Rectification_techno...
https://news.ycombinator.com/item?id=40693984#40720147 :
> Is there a rectifier for gravitational waves, and what would that do?
Basically just abs() absolute value eh
IDK what the SOTA efficiency of these is: "Nanoscale spin rectifiers for harvesting ambient radiofrequency energy" https://news.ycombinator.com/item?id=43234022
BespokeSynth is an open source "software modular synth" DAW that can host LV2 and VST3 plugins like Guitarix, which can also add signal transforms like guitar effects pedals. Tried searching for an apparently exotic 1A universal power supply. Apparently also exotic: A board of guitar pedals with IDK one USB-A and a USB-C adapter with OSC and MIDI support; USB MIDI trololo pedals