GRB Series are high-frequency power conversion circuits that use high-frequency switching and inductors, transformers, and capacitors to smooth out switching noise into regulated DC voltages. These series maintain constant voltage output even when changing input voltages and output currents. Safety requirements are a common reason to use an isolated power converter. GRB Series is an enterprise system that provides Army-serviced employees with access to information regarding government wide benefit programs such as health insurance, life insurance, the Thrift Savings Plan (TSP), retirement, and more. These series separate the output from dangerous voltages on the input.