Electronic power conversion products, namely DC to DC power supplies, DC to AC power supplies, high frequency power supplies, battery chargers, battery conditioners, AC power plants, DC power plants, stand-by power plants, uninterruptible power sources, namely AC power sources that are capable of providing back-up AC power from a battery system; solar controllers, namely electronic circuits that control the voltage and current provided from a photovoltaic panel to other connected devices; grid connected solar power systems, grid connected power systems, peak power trackers which control the flow of power from a photovoltaic panel, ensuring operation at the point of maximum efficiency, inverters, switch mode inverters, DC to AC inverters, cogeneration inverters, cogeneration power systems; electronic power conversion products, namely AC to DC power supplies, programmable power supplies, laboratory power supplies, system power supplies, switching power supplies, DC power supplies; digital control and interface systems for power supplies