Re: mountable power ports

On Fri, 28 Mar 2025 14:40:05 -0400, ehsjr <ehsjr@verizon.net> wrote:

On 3/28/2025 7:13 AM, Phil Hobbs wrote:

john larkin <jlArbor.com> wrote:

On Fri, 28 Mar 2025 09:44:27 +0000, liz@poppyrecords.invalid.invalid
(Liz Tuddenham) wrote:
>

john larkin <jl@glen--canyon.com> wrote:
>

On Thu, 27 Mar 2025 12:53:59 -0700, Don Y
<blockedofcourse@foo.invalid> wrote:
>

On 3/27/2025 8:36 AM, Liz Tuddenham wrote:

Christopher Howard <christopher@librehacker.com> wrote:
>

liz@poppyrecords.invalid.invalid (Liz Tuddenham) writes:
>

>
Screw pillars with 4mm banana sockets in the centre.  Available in a
wide range of colours, rated to 500v and 10 amps.  Easy to fit, easy to
plug-up and easy to see what you are doing so you don't make silly (and
expensive) mistakes.
>

>
We are just talking about something simple like this, right?:
>
https://www.amazon.com/40Pcs-Durable-Panel-Mount-Adapter/dp/B0DPWQQ53Z/

>
They would be perfectly satisfactory if you were happy just using plugs.
If you wanted the option of using bare wire ends, you could try:
>
https://www.amazon.com/FULARR-Premium-Binding-Terminal-Connector/dp/B07Z
P83FB9/145-4921351-4020543

>
If you choose to use a binding post, consider their spacing; first, you want
to be sure you can get your fingers around them to tighten/loosen them
comfortably.  And, if they support banana plugs, consider spacing them
to support "dual" plug assemblies:
>
<https://www.amazon.com/CESS-2-Way-Speaker-Banana-Connectors/dp/B01E7XUKG4>

>
>
It's one of the physical constants of this universe that banana jacks
are always 0.75" apart.

>
...except in pre-war Netherlands, where they were 1-inch apart.

>
Surely you mean one meter.
>
But which war?
>
>

 
Well, they are banana jacks, so they have to be usable by monkeys. (*)
 
Cheers
 
Phil Hobbs

>
In the days when Reliability, Availability and Serviceability
were IBM mandated design goals, someone suggested the slogan
"Up your RAS".
>
Ed
>

 
(*) Ancient IBM joke: “Our machines are so easy to service that a monkey
could do it!” “Is this a one, two, or three-banana job?”
 
(The “???job” became proverbial.)
 

I have a book IBM's Early Computers by Bashe et al.

They started with card tabulators and took forever to accept binary.
Their early computers were BCD monsters.

I once, in my youth, designed an ADC and interfaced it to a 1401, at
the Tulane Primate Research Center. It was literally a monkey project.

https://tnprc.tulane.edu/