[sdiy] twisted pairs?

[Ian Fritz]

At 08:56 PM 12/1/2008, David G. Dixon wrote:
>I'm not sure about the theory, but wrapping signal wires with ground wire in
>one of my circuits virtually eliminated the noise that the signal wires were
>broadcasting to the rest of my circuit.  However, I was careful only to
>ground one end of the ground wire; the other end was unconnected.


I've had exactly the same experience.  I needed to be careful with my 
5Pulser waveshaper, since it puts out square waves up beyond 
100kHz.  Twisting pairs with just one end grounded worked great.  Doesn't 
agree with the theory we've been hearing, though. <shrug>

Ian