What caused the change in electronic terminology?
What caused the shift from calling things like rheostats and condensers to resistors and capacitors, or the move from cycles to Hertz?
It seemed to just pop up out of nowhere, seeing as the previous terms seemed fine, and are in use for some things today (like rheostat brakes, or condenser microphones).
You are viewing a single comment
This seems like a fun rabbit hole to go down with regard to capacitors vs condensers, but a rheostat and a resistor are not the same, and both are used by these names in electronics today.
Another player is the potentiometer, which handles low power variability. That's about the extent of my ability to shed light here though. I look forward to other more knowledgeable than I am adding to (and likely correcting) my comments.
Edit: typo and clarification
Edit2: A family member was re-assembling an audio amp and set a 1-farad cap on his just wiped countertop (which happened to be damp still) and blew a crater in the cheap Formica. We laughed, and nobody was hurt. I was 14, and learned that a capacitor sure can discharge quickly!
What kind of amp uses a full farad of capacitance?
The ones I see tend to be a few thousand microfarads, maybe 20-40k for high end stuff. OTOH sometimes you see innoculous looking supercaps for storing settings; I've got dome out of an old Technics tuner that are like 3F... at 3v. Not sure there's enough oomph to do that damage even at 3F.
I asked him what it was and have yet to hear back. He was known for fiddling and upgrading, but I may be mixed up between his car amp and home amp. I know he used to add whole-farad caps to provide "punch" for the car amp without dimming his headlights, but I thought his Denon Optical Class amp had a big cap, but in hindsight, that makes less sense, as there's not much call for it after a dedicated power stage.
I'll update when if he gets back to me with a useful answer.