Electrical or electronic device, e.g. voltage adapter for lamp, has circuit board carrying conductor to be protected with reduced cross-section burn-through region

摘要

The device has a circuit board (4) carrying a conductor (6) to be protected and a region of reduced cross-section as a burn-through region (7) that is at least partly covered by a non-conducting coating. The conductor track can be a copper track that is not tinned in the burn-through region. The coating is in the form of at least two accumulations of material at a distance apart in the burn-through region.