5d80d7912b Ott, Noise Reduction Techniques in Electronic Systems, 2nd Edition (Wiley, New York, 1988). RF cabling, usually coaxial, is also often equipped with a ferrite core, often a fairly large toroid, through which the cable can be wound perhaps 10 times to add a useful amount of common mode inductance. The NEC, National Electrical Code defines a ground as: "a conducting connection, whether intentional or accidental between an electrical circuit or equipment and the earth, or to some conducting body that serves in place of the earth." When talking about grounding it is actually two different subjects, earth grounding and equipment grounding. Larry Robinson personal website. Phantom loop Sheath current Telluric current .
Sources of ground current[edit]. It is important for the dealer, isntallee and the end user to be aware that this problem can occur. See Figure 2. Generally the analog and digital parts of the circuit are in separate areas of the PCB, with their own ground planes, and these are tied together at a carefully chosen star point. This capacitivly coupled power line signal will usually contain significant harmonics out to 1MHz or more. Why ground loop is a problem ? Ground loops are a mystery to many people. One of the most common problem is called "ground loop". Since most equipment is not internally grounded properly, connecting both ends of the shield is not often practiced, since doing so usually creates noisy interconnections. The Next Best Right Way To Do It. If you are unable to do things correctly (i.e.
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