between this strip, and the main ground plane of the circuit. The two should be connected at only one point. This way, if there is a large current between connector shields, it will not pass through the ground plane of the circuit. A star topology should be used for ground distribution, avoiding loops. High-power devices should be placed closest to the power supply, while low-power devices can be placed farther from it. Signals, wherever possible, should be differential. Isolated power supplies require careful checking for parasitic, component, or internal PCB power plane capacitance that can allow AC present on input power or connectors to pass into the ground plane, or to any other internal signal. The AC might find a path back to its source via an I/O signal. While it can never be eliminated, it should be minimized as much as possible. The acceptable amount is implied by the design. See also Ground potential rise Phantom loop Sheath current Stray voltage Telluric current Notes References External links Electrical circuits Electromagnetic compatibility