Tagged Questions

2
votes
4answers
2k views

How to tell polarity expected of a DC barrel jack?

I'm sure this information is somewhere around the internet, but I can't find it. I have a device that takes a DC barrel jack. I don't know the polarity it expects though. There is a marking though. ...
3
votes
1answer
571 views

Is there a set of standard symbols for connectors / wires / protocols?

I am attempting to convey via a diagram how a number of devices are to be connected. In this specific problem: A cable connects to the Queuing Controller via an RJ11 connector The other side of the ...
6
votes
4answers
3k views

Deciphering a DC jack schematic

I am trying to include a DC jack on one of my PCBs. I am just setting up the footprints now, and I am not quite sure which pin is which. What do the symbols on the drawing mean? I have included a ...