fantomstrøm

Fantomstrøm, often translated as phantom current or ghost current, refers to an electrical current that is not intended to be present and is not detected by standard measurement equipment. It is a subtle phenomenon that can arise from various sources within electrical systems.

One common cause of fantomstrøm is inductive coupling. When two conductors are close together, the alternating magnetic field generated by a current in one conductor can induce a small, unwanted current in the other. This is particularly relevant in complex wiring harnesses or when components are densely packed.

Another contributing factor can be capacitive coupling. Similar to inductive coupling, the electric field from a charged conductor can influence nearby conductors, leading to the flow of a small, often AC, current. This effect is more pronounced at higher frequencies.

Fantomstrøm can also be generated by residual charges or leakage currents in poorly insulated components. These are often very low in magnitude but can still be significant enough to interfere with sensitive electronic circuits.

While typically very small, fantomstrøm can pose challenges in sensitive applications such as precision measurement or low-power electronics. It can introduce noise, affect signal integrity, and lead to erroneous readings. Identifying and mitigating fantomstrøm often requires specialized measurement techniques and careful circuit design to minimize inductive and capacitive couplings and ensure adequate insulation.