What is a magnetic core & coil low voltage transformer?

A low voltage transformer is an electrical device that reduces 120 volts (line voltage) into 12 volts or 24 volts (low voltage). It is sometimes made by winding two wires around an iron core with one wire connected to the primary side (line voltage side) and the second wire connected to the secondary side (low voltage side). In the case of low voltage halogen or low voltage xenon lighting the low voltage transformer has an input or primary voltage of 120 volts (sometimes 277 volts) and an output or secondary voltage of 12 volts or 24 volts. An example of a core and coil type transformer is our LS and LT models.