Instead of the sane approach of specifying 5, 9, 12, 15, and/or 20 volts and the amperages, products insist on listing every model of device in existence instead.
Most will do 12V, but I always want to make sure it’ll power my laptop (20V) as well.
A big thank you to reviewers who post images of the actual products where it shows the relevant info in one short line on the labels:
e.g. PD Output: 5V=3A, 9V=3A, 12V=3A, 15V=3A, 20V=3A
For some reason, “amperage” mildly infuriates me. It’s current.
Voltage equals amperage times ohmage.
Ohmage? You mean resistance?
That was the joke. They are making everything in the equation end in -age. Because “amperage” bugs them.
Volt + age
Amper(e) + age
Ohm + age
In other words, ohmage is an homage to amperage.
That’s the joke. Edit: oops, you got the message already! 😂
Why is ‘voltage’ fine then?
Because potential sounds weird?
It only sounds weird because you’re used to ‘voltage’.
And wattage only sounds weird because you’re used to power.
Where did I say wattage sounds weird?
I guess ohmage was the one that f4f mentioned.
Tension.
Tension makes me think of how one “can’t let go” if high-voltage AC is flowing through their arms. 😬
…and warnings in multiple languages. HAUTE TENSION!
Then why doesn’t “voltage” bug you? It’s the same sort of word: unit + “age”.
To fully satisfy you, it should be:
electrical potential difference = current * resistance.
Potential or electromotive force. “Voltage” is long accepted. The only use of “amperage” you’ll find in The Art of Electronics is in the index: Amperage, see current. Ampère called current “intensité du courant”, hence I in V = I × R.
I don’t know why it bugs me. This is Mildly Infuriating… The place for nitpicking! 😅
Agreed, and thanks for the history lesson!
I raise you “cubic capacity” meaning volume.