noise induced on non-shielded wires in cable
noise induced on non-shielded wires in cable
(OP)
I have a 125VDC control circuit that uses a non-shielded cable in a tray with AC power cables. There is 60 Volts AC being induced on a 125VDC wire. I know that the solution is to pull in a new shielded cable, but, does anyone know of a way to "drain off" this induced AC instead of pulling a new shielded cable?





RE: noise induced on non-shielded wires in cable
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RE: noise induced on non-shielded wires in cable
SceneryDriver
RE: noise induced on non-shielded wires in cable
RE: noise induced on non-shielded wires in cable
RE: noise induced on non-shielded wires in cable
I tried googling more info on the ballast resistor and capacitor idea with no luck. Do you guys have any more information on those ideas?
Thank you for your responses!
RE: noise induced on non-shielded wires in cable
OMG. Look up the concept of "loop area" in respect to EMI/EMC/EEE.
Hint: That's not a transmission line, it's a transformer winding.
RE: noise induced on non-shielded wires in cable
ditto... on interconnecting wiring, I always lace the applicable cabling together to minimize the cross sectional area that any stray magnetic fields may cut through...
also learned to appreciate what proper cable and balanced driver/receivers designed with good longitudinal balance were capable of achieving. I didn't appreciate or understand this electrical characteristic until I worked on the design of a telephone PBX system years ago. Same design characteristic applied to ethernet twisted pair wiring allowed the original ethernet coax transmission system to be replaced with greatly improved the distance, speed capability, using inexpensive twisted pair wiring.
RE: noise induced on non-shielded wires in cable
You know antennas? Do the opposite.
Here endeth the lesson.