The most common method is to use capacitors across a signal line or wire to ground to get rid of the noise. Inductors are sometimes used also, but they have some frequency limits and can also get pretty bulky and expensive. . This information is mainly aimed at reducing or eliminating radio, TV, cell phone, and other electronic noise and interference in photovoltaic and other DC powered systems and from equipment used in PV systems. Much of it applies to anything or any equipment with EMI (Electromagnetic Interference). . While the risk of electro-magnetic and/ or radar interference from PV systems is very low, it does merit evaluation, if only to improve the confidence of site owners and other stakeholders. Such interference can reduce performance and compromise the system's reliability.
[PDF Version]
