ping

[TK]

So would that be "near-field" or "far-field"? <g>

Terry


>
> The voltage ( or emf) inductively coupled into a circuit is proportional
to
> both the flux density ( magnetic field strength / standard unit area ) and
> the "area" enclosed by the circuit loop. The circuit loop includes the
> source, all wiring from the source to the load, the load,  and finally the
> "return" from the load back to the source ( usually defined as the local
> ground). By twisting the wires, the circuit's effective loop area is
reduced
> and therefore the inductively coupled noise voltage amplitude is
attenuated.
>
> Twisted pair wire is a cheep alternative to magnetically shielding
circuits
> with a high permeability metal (Mu metal).
>
>
>