"DecadentLinuxUserNumeroUno" wrote in message
...
On Fri, 16 Oct 2015 23:03:30 -0700, "Adam" Gave us:


"DecadentLinuxUserNumeroUno" wrote in message
. ..
On Fri, 16 Oct 2015 20:13:29 -0700, "Adam" Gave us:

Any Universal 90W Notebook Power Adapter 19V recommendations?

The Lenovo 90 Watt unit is nice, but you would have to put the right
output plug onto it.

I'm surprise that they don't have that ac adapter plug connector better
standardized.


They are standardized, but the maker gets to choose the one they want
to use, and the plugs/jacks are not tied to a specific voltage to be
fed, though there was a push toward that end in the beginning of the
standard.

They are in metric and Lenovo uses the biggest I've seen, and likely
the right one for 19 Volts, but the other 19 V laptop makers might argue
against that statement since most of them adopted a slightly smaller
choice.

So, there is a standard for the plug sizes and center pin diameters,
but they are not tied to or standardized against a table of voltages.

There are 5 and 12 volt "typical" choices, but they too are not set in
stone.

AND 19 Volts is a non-standard (as it were) DC supply source, so there
is no plug size designated for it at all.

https://en.wikipedia.org/wiki/EIAJ_connector

Thanks, maybe I'm missing something but
if desktops can be so nicely standardized,
I don't see why laptop PSUs can't be standardized
in a similar manner.