LED drivers; light dimmers; light sensors; light emitting diodes; electric and electronic regulating and control devices for operating lamps, small transformers and light- emitting diodes; electric operating devices for dimming inorganic light-emitting diodes; electronic transformers for use with inorganic light-emitting diodes; electronic circuit arrangements in the nature of electronic circuit boards for operating inorganic light-emitting diodes; electric constant voltage and constant curre...