Re: "Barrel" connectors

On 16/06/2025 11:47, Chris Jones wrote:

On 16/06/2025 11:28 am, Don Y wrote:

On 6/15/2025 1:50 PM, Don Y wrote:

Is there a better way?

>
Cancel that.  A colleague has something in the mail to me, already!
>

 Let us know if it is any good. It is a problem that I have too.
 I somewhat distrust that type of connector in general, unless both parts come from the same manufacturer - some of them have a slit inner pin that is slightly springy/compliant and would be appropriate to fit in a solid tube in the other part, whereas others have a solid pin and some of the sockets have a bifurcated springy inner contact. Where there is a solid pin fitting in a solid tube, it seems they only work because there is a sideways force on the whole thing from the asymmetrical outer contact. Seems dodgy.
 I've also come across the belief amongst the general public that it's ok to plug in any of these barrel connectors as long as they fit, presumably because that's mostly true of USB and so on. So they fry their modem that wants 12VDC by plugging in a 15VAC adapter or whatever.

Power supplies for POE+ switches often use the same connector type but
deliver about 52V at a few amps.
John