Demystifying surge protection
- Author: Alec Forbes
Although surge protection can seem mystifying, it is possible to effectively protect systems if one
understands the environmental risks and regulatory considerations. An upfront assessment of the risks
of exposure to high-powered surges – taking into account the magnitude of the energy, distance
and coupling method – this enables the prediction of what surges a system might see.
To make such predictions more concrete, regulatory bodies like the IEC have defined standards that allow
confident testing of products to ensure that they can survive surges. An understanding of these surges and their causes allows the selection of ICs that enable a robust product design that will survive a lifetime
of operation, regardless of environment, without requiring major design trade offs.
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