" wrote:

On Sunday, March 27, 2016 at 5:03:32 PM UTC-4, Michael Terrell wrote:
" wrote:

N_Cook wrote:

I have a customer who keeps breaking things, often fatally, because he
picks up the nearest wallwart, having mislaid the original one, because
it looks the same size black lump and the connector pushes in, so it
must be ok .

Once upon a time, there was movement to color-code and size-code these things... It never quite took.


Have you seen these adapters?

http://www.ebay.com/itm/171829811403

I have. Sadly, it was the south end where the color-coding never took, not the north end.


I bought them for the workbench, i really don't care that they are
color coded like other adapters I have that are the wrong voltage. A
cable connected to a 0-20V 3A HP 6253A power supply on the bench lets me
power almost any DC powered device to see if it works, or to repair the
ones that don't. No need to modify an existing supply, just to see if
something works.