An embedded power supply apparatus is partially buried in an enclosed structure, is configured to provide a first DC voltage to a plurality of electronic devices, and includes a first power conversion circuit, a plurality of switch circuits, a human-machine interface module and a control circuit. The first power conversion circuit is configured to convert an input AC voltage into the first DC voltage and provide the first DC voltage to the switch circuits. The switch circuits each is configured to selectively transmit the first DC voltage to a corresponding electronic device of the electronic devices according to a corresponding first control signal of a plurality of first control signals. The control circuit is configured to receive a second control signal generated by the human-machine interface module, and generate the first control signals to the switch circuits according to the second control signal.

In one embodiment, a power system includes a power panel operable to distribute alternating current (AC) power and pulse power to a plurality of power outlets and having an AC circuit breaker and a pulse power circuit breaker, the pulse power comprising a sequence of pulses alternating between a low direct current (DC) voltage state and a high DC voltage state, a power inverter and converter coupled to the power panel through an AC power connection and a pulse power connection and including a DC power input for receiving DC power from a renewable energy source, an AC power input for receiving AC power, and a connection to an energy storage device, and a power controller in communication with the power inverter and converter and operable to balance power load and allocate power received at the DC power input and the AC power input to the power panel.

An electrical power supplying and cord management system including: a module docking station having a module docking receptacle and base station portion having integrated external power cord storage compartments for power cord management; and a multi-function dockable module dockable in the module docking receptacle and manually removable and useable locally as well as at remote locations. The dockable module supports (i) an emergency-light illumination subsystem including a LED array for producing, during an emergency-light illumination mode, illumination in response to automatic detection of changes in line voltage supplied to the portable electrical power supplying system; a night-light illumination subsystem including the LED array for producing, during a night-light illumination mode, illumination in response to automatic detection of changes in the light level of the ambient environment; and a battery power storage subsystem containing a rechargeable battery storage module for storing DC electrical power for driving the LED array during various modes, and recharging a DC power electronic device such a mobile phone.

A wireless charging device includes a driver unit configured to generate one of a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Also, the wireless charging device includes a transmitting unit having a first coil and a first capacitor and configured to transmit the first AC voltage signal. Further, the transmitting unit includes a second coil and a second capacitor and configured to transmit the second AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a first receiver device operating at the first frequency based on a change in a first voltage in the transmitting unit, and detect a second receiver device operating at the second frequency based on a change in a second voltage in the transmitting unit.

A wireless charging device includes a driver unit configured to generate one of a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Also, the wireless charging device includes a transmitting unit having a first coil and a first capacitor and configured to transmit the first AC voltage signal. Further, the transmitting unit includes a second coil and a second capacitor and configured to transmit the second AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a first receiver device operating at the first frequency based on a change in a first voltage in the transmitting unit, and detect a second receiver device operating at the second frequency based on a change in a second voltage in the transmitting unit.

A power receptacle assembly includes a base unit which includes a housing. The housing includes a bottom housing, a housing cover coupled to the bottom housing and first and second end caps coupled to the bottom housing and the housing cover. The bottom housing, the housing cover, and the first and second end caps define a housing interior. The base unit also includes a constant voltage driver disposed within the housing interior. Additionally, the power receptacle assembly includes a plurality of power receptacles electronically coupled to the constant voltage driver though the housing. The power receptacle assembly also a secondary unit including a housing defining an interior, a sled coupled to another power receptacle configured to be disposed within the housing interior and a clamp.

A power receptacle assembly includes a base unit which includes a housing. The housing includes a bottom housing, a housing cover coupled to the bottom housing and first and second end caps coupled to the bottom housing and the housing cover. The bottom housing, the housing cover, and the first and second end caps define a housing interior. The base unit also includes a constant voltage driver disposed within the housing interior. Additionally, the power receptacle assembly includes a plurality of power receptacles electronically coupled to the constant voltage driver though the housing. The power receptacle assembly also a secondary unit including a housing defining an interior, a sled coupled to another power receptacle configured to be disposed within the housing interior and a clamp.

A power control method comprises: obtaining voltage information of each input circuit; generating a first control signal based on the voltage information and a bus voltage value; converting a voltage of each input circuit into a bus voltage based on the first control signal; obtaining load information; generating a second control signal based on the load information and the bus voltage value; converting the bus voltage into a load voltage based on the second control signal; and outputting the load voltage.

A power control method comprises: obtaining voltage information of each input circuit; generating a first control signal based on the voltage information and a bus voltage value; converting a voltage of each input circuit into a bus voltage based on the first control signal; obtaining load information; generating a second control signal based on the load information and the bus voltage value; converting the bus voltage into a load voltage based on the second control signal; and outputting the load voltage.

A corrosion protection device, system, and method are provided. The device may operate while being coupled to the object being protected and to a power source using a total of only two terminals. This may be accomplished by de-referencing the return path node of the circuit using a choke device that blocks a temporal AC component of an anti-corrosion signal. The choke device therefore diverts the anti-corrosion signal to a single negative/ground path to the object and then returns through a positive lead of the circuit. A two terminal corrosion protection device may thereby simplify the installation process, for example on a vehicle, by not requiring that another connection be made to the object at a spaced apart location from a first connection to the object.