Electronics > Projects, Designs, and Technical Stuff
Well shielded DC Cable
(1/1)
ezalys:
Hey all,
We're building some lab equipment and I want to pick some kind of cable to carry power (5,12,15 V, with 5 being high current at 5 amps) from our linear DC supplies (mostly acopian boxes) to our custom instruments. I'm looking for some off-the-shelf connector that I can use to carry 3 voltages (so 4 pins + shield) to an instrument, where high quality cables are also cheaply available. At first glance, XLR seems perfect. High current capacity, cheap cables, well shielded, nearly ideal. I just want something with more pins. Any suggestions?
E
ejeffrey:
I wouldn't recommend using the shield alone for return. Shields are usually foil that isn't meant to carry high current. Look for a 4 pin cable plus shield and connect shield to the chassis ground at both ends unless proven otherwise.
There should be some M8 / M12 and DIN style connectors that will work.
HwAoRrDk:
What about 5 pin XLR? Commonly used for DMX lighting control.
Although, off-the-shelf DMX cables probably won't have the appropriate wire gauge for your DC power application.
Zero999:
--- Quote from: ejeffrey on February 21, 2020, 02:55:23 am ---I wouldn't recommend using the shield alone for return. Shields are usually foil that isn't meant to carry high current. Look for a 4 pin cable plus shield and connect shield to the chassis ground at both ends unless proven otherwise.
--- End quote ---
You've misread the original post. He has no intention of using the shield as a current return path and is looking for a 4 pin + shield connector.
--- Quote from: ezalys on February 21, 2020, 12:41:55 am ---Hey all,
We're building some lab equipment and I want to pick some kind of cable to carry power (5,12,15 V, with 5 being high current at 5 amps) from our linear DC supplies (mostly acopian boxes) to our custom instruments. I'm looking for some off-the-shelf connector that I can use to carry 3 voltages (so 4 pins + shield) to an instrument, where high quality cables are also cheaply available. At first glance, XLR seems perfect. High current capacity, cheap cables, well shielded, nearly ideal. I just want something with more pins. Any suggestions?
E
--- End quote ---
Yes, XLR sounds like a good idea. How many pins do you need? You said three voltages, plus return and a shield, so a 5 way XLR seems perfect. The usual distributors such as RS Components and Digi-Key sell them.
Navigation
[0] Message Index
Go to full version