Abstract: A modulated LED array apparatus includes a modulation signal generator that produces a pulse width modulation (PWM) signal that is applied as input to an LED power drive circuit that produces an LED power drive signal; the LED power drive signal is applied as input to an array of LEDs and, in response, the LED array outputs PWM radiation, wherein the LEDs in the array output radiation in a predetermined band of wavelength.

Abstract: Method of operating a bidirectional DC DC converter that transfers power among an energy source (for example, a solar PV array), an energy storage system, and an energy usage system (for example, a DC AC inverter) to control the charge and discharge times of the energy storage system so that power harvested during peak energy source production can be stored and can later be released to the energy usage system at predetermined times.

Abstract: Method of operating a bidirectional DC DC converter that transfers power among an energy source (for example, a solar PV array), an energy storage system, and an energy usage system (for example, a DC AC inverter) to control the charge and discharge times of the energy storage system so that power harvested during peak energy source production can be stored and can later be released to the energy usage system at predetermined times.

Abstract: A bidirectional DC DC converter that transfers power among an energy source (for example, a solar PV array), an energy storage system, and an energy usage system (for example, a DC AC inverter). The converter controls the charge and discharge times of the energy storage system so that power harvested during daylight can be metered to the DC AC inverter at predetermined times. During charge times, the converter utilizes synchronous rectification when down-converting higher voltages to lower voltages and during discharge times the converter utilizes variable overlapping of switch drive signals to provide a continuous range of voltage levels of transferred power from the energy storage system to the DC AC inverter.

Abstract: A DC AC inverter system includes a full bridge DC AC inverter, a first module with a first capacitance connected to a positive DC input and an intermediate output, and a second module with a second capacitance connected to a negative DC input and to the intermediate output, wherein the first and second capacitance is greater than P?A/(V?*Vnom*2?f); (a) P? is a predetermined power imbalance between a first output and the intermediate output and a second output and the intermediate output; (b) Vnom is a predetermined nominal output voltage between the first output and the intermediate output (V1) and the second output and the intermediate output (V2); (c) V? is a predetermined fraction of voltage difference, relative to Vnom, between V1 and V2 when there is a power imbalance P?; and (d) f is a frequency of V1 or V2.

Abstract: A bidirectional DC DC converter that transfers power among an energy source (for example, a solar PV array), an energy storage system, and an energy usage system (for example, a DC AC inverter). The converter controls the charge and discharge times of the energy storage system so that power harvested during daylight can be metered to the DC AC inverter at predetermined times. During charge times, the converter utilizes synchronous rectification when down-converting higher voltages to lower voltages and during discharge times the converter utilizes variable overlapping of switch drive signals to provide a continuous range of voltage levels of transferred power from the energy storage system to the DC AC inverter.

Abstract: An embodiment replaces a transformer with a capacitor-based circuit module in a DC AC converter.

Abstract: This disclosure describes a unique bidirectional DC DC converter that transfers power between a high voltage source, such as the DC voltage in a solar PV array, a low voltage energy storage element such as a battery pack, and an inverter that is controlling the operating voltage of the solar PV array. Its novelty is that it is transparent to the inverter's control mechanism and is perceived as a source equivalent to the existing solar PV. By controlling the charge and discharge times of the energy storage element, the solar power that is harvested during the sun hour day can be metered back to the inverter at more optimal times, either for self consumption or to take advantage of higher rates of power sold to a connected utility. The bidirectional DC DC converter is unique in its operation in that it utilizes synchronous rectification when down-converting higher voltages to lower voltages and in that it uses high speed Silicon Carbide, or Gallium Nitride devices necessary for such rectification.

Abstract: A system and method are provided for monetizing a property value inquiry related to a property identifier submitted by a user along with personal information of the user. The personal information and property identifier submitted by the user are used by the system to generate a lead that is marketable to lenders or other service providers. Promotional information of the lender or other service provider is displayed to the user in a pop-under or a pop-after browser window. The system promotes loans or other services to consumers via such online advertisements directed to consumers seeking information related to property values. The system includes processes for inputting the user's personal information, generating a property value report that is specific to the property identifier, and promoting certain lenders or services providers to the user based on the personal information input into the system by the user.

Abstract: A complementary converter is a switch mode converter circuit that uses one pulse-width modulation (PWM) controller and one power MOSFET to run a two-stage power-factor-corrected (PFC) power supply. The two-stage power-factor-corrected power supply can include a power-factor-corrected boost converter, and a DC-to-DC converter (either step-up or step-down). The DC-to-DC converter can be, e.g., a Flyback, Forward, Cuk, or Buck Converter. The complementary converter circuit includes a voltage input section that takes a universal VAC input and rectifies the input. Then the PFC boost converter boosts the rectified half-cycle DC to a DC line at a higher voltage. The complementary converter circuit further includes an integrated circuit with the power-factor-correction and PWM switching capabilities to control the converters. The DC-to-DC converter brings the voltage down to an appropriate level for the final load (e.g., LEDs).

Abstract: A complementary converter is a switch mode converter circuit that uses one pulse-width modulation (PWM) controller and one power MOSFET to run a two-stage power-factor-corrected (PFC) power supply. The two-stage power-factor-corrected power supply can include a power-factor-corrected boost converter, and a DC-to-DC converter (either step-up or step-down). The DC-to-DC converter can be, e.g., a Flyback, Forward, Cuk, or Buck Converter. The complementary converter circuit includes a voltage input section that takes a universal VAC input and rectifies the input. Then the PFC boost converter boosts the rectified half-cycle DC to a DC line at a higher voltage. The complementary converter circuit further includes an integrated circuit with the power-factor-correction and PWM switching capabilities to control the converters. The DC-to-DC converter brings the voltage down to an appropriate level for the final load (e.g., LEDs).