Disclosed are power supply methods in a power over data lines (PoDL) system for a vehicle network. An operation method of a power sourcing equipment (PSE) for power supply to a powered device (PD) comprises measuring an input voltage applied to the PSE; detecting a low voltage state in which the input voltage is lower than a low voltage detection reference voltage; determining whether the low voltage state is a transient voltage drop state; and entering a settle-sleep step when the low voltage state is not the transient voltage drop state, and stopping the power supply between the PSE and the PD while maintaining a link between the PSE and the PD when the low voltage state is the transient voltage drop state.

Power distribution systems having a bi-directional link for delivery of power between each other are disclosed. According to an aspect, a PDU includes a first power inlet configured to receive electric power from a power source. The PDU includes a second power inlet configured to receive electric power from another power distribution unit. The PDU also include an electric power router configured to determine whether the power source is in a fault condition for delivering electric power to the first power inlet. Further, the electric power router is configured to communicatively engage the other PDU for managing receipt of electric power from the other PDU based on the fault condition. The electric power router is configured to receive, at the second power inlet, electric power from the other PDU. The electric power router is also configured to route, to power outlets, the electric power received from the other PDU.

Power distribution systems having a bi-directional link for delivery of power between each other are disclosed. According to an aspect, a PDU includes a first power inlet configured to receive electric power from a power source. The PDU includes a second power inlet configured to receive electric power from another power distribution unit. The PDU also include an electric power router configured to determine whether the power source is in a fault condition for delivering electric power to the first power inlet. Further, the electric power router is configured to communicatively engage the other PDU for managing receipt of electric power from the other PDU based on the fault condition. The electric power router is configured to receive, at the second power inlet, electric power from the other PDU. The electric power router is also configured to route, to power outlets, the electric power received from the other PDU.

A load control system for controlling the amount of power delivered from an AC power source to a plurality of electrical load includes a plurality of energy controllers. Each energy controller is operable to control at least one of the electrical loads. The load control system also includes a first broadcast controller that has a first antenna and a second antenna. The first antenna is arranged in a first position and the second antenna is arranged in a second position that is orthogonal to the first position. The broadcast controller is operable to transmit a first wireless signal via the first antenna and a second wireless signal via the second antenna. Each of the energy controllers is operable to receive at least one of the first and second wireless signals, and to control the respective load in response to the received wireless signal.

A load control system for controlling the amount of power delivered from an AC power source to a plurality of electrical load includes a plurality of energy controllers. Each energy controller is operable to control at least one of the electrical loads. The load control system also includes a first broadcast controller that has a first antenna and a second antenna. The first antenna is arranged in a first position and the second antenna is arranged in a second position that is orthogonal to the first position. The broadcast controller is operable to transmit a first wireless signal via the first antenna and a second wireless signal via the second antenna. Each of the energy controllers is operable to receive at least one of the first and second wireless signals, and to control the respective load in response to the received wireless signal.

A power supply unit includes a housing having at least one input terminal and at least one output terminal, an AC-DC converter which is arranged in the housing and which is connected to the input terminal, a DC-DC converter which is arranged in the housing and which is connected to the output terminal; and a capacitor which forms a structural part of the housing. Furthermore, an on-board power supply network of an aircraft or spacecraft is also described.

An apparatus for a power system. The apparatus includes multiple electrical power sources and an enclosure operatively connected to the power sources at multiple input terminals. Multiple loads operatively connect to the enclosure at multiple output terminals by multiple cables. The enclosure includes the input terminals and the output terminals and a controller unit. Multiple selection units operatively connect to the controller unit, multiple power converters are connected to multiple connection paths. The selection units connect to at least one of multiple switches connected in the connection paths. Multiple sensor units are operatively attached to the controller unit which is configured to sense multiple parameters in the connection paths. Responsive to the parameters sensed by the sensor units, the selection units select the connection paths between the electrical power sources and the loads.

An apparatus for a power system. The apparatus includes multiple electrical power sources and an enclosure operatively connected to the power sources at multiple input terminals. Multiple loads operatively connect to the enclosure at multiple output terminals by multiple cables. The enclosure includes the input terminals and the output terminals and a controller unit. Multiple selection units operatively connect to the controller unit, multiple power converters are connected to multiple connection paths. The selection units connect to at least one of multiple switches connected in the connection paths. Multiple sensor units are operatively attached to the controller unit which is configured to sense multiple parameters in the connection paths. Responsive to the parameters sensed by the sensor units, the selection units select the connection paths between the electrical power sources and the loads.

A desk top alarm or time related or LED lighting device with backup battery for power fail time keep time functions always work, and device has USB-port(s) has built-in or external AC-to-DC circuit to get 1.sup.st voltage DC, and 1.sup.st DC go through at least one of DC-to-DC (including just conductive-piece) to 2.sup.nd or more voltage DC(s). At least one of 1.sup.st or 2.sup.nd or more voltage DC to supply to at least one of (i) USB-charging port(s), (ii) 8 light source(s), or optional (iii) IC, (iv) speaker, (v) audio device, (vi) radio, (vii) outlet(s), (viii) surge or other safety protection circuit, (ix) colorful LEDs or LED-bulb for accent light, wake-up light, sleep night light, (x) colorful LEDs for charging status or power on/off or am/pm or, other indicator purpose, (xi). Same AC-to-DC circuit and DC-to-DC circuit also apply to desk top LED light which has built-in plurality of LED(s) inside the LED(s) compartment or replaceable/detachable CFL or LED bulbs for desk top LED lighting device. Further, the device has built-in optional outlets to supply AC power to be-supplied products. The device has export power from USB-port is one of (a) min. 1 A or (b) 3.1 to 10 Amp or (c) 12 Watt to 60 Watt to make regular or quickly charging functions.

A desk top alarm or time related or LED lighting device with backup battery for power fail time keep time functions always work, and device has USB-port(s) has built-in or external AC-to-DC circuit to get 1.sup.st voltage DC, and 1.sup.st DC go through at least one of DC-to-DC (including just conductive-piece) to 2.sup.nd or more voltage DC(s). At least one of 1.sup.st or 2.sup.nd or more voltage DC to supply to at least one of (i) USB-charging port(s), (ii) 8 light source(s), or optional (iii) IC, (iv) speaker, (v) audio device, (vi) radio, (vii) outlet(s), (viii) surge or other safety protection circuit, (ix) colorful LEDs or LED-bulb for accent light, wake-up light, sleep night light, (x) colorful LEDs for charging status or power on/off or am/pm or, other indicator purpose, (xi). Same AC-to-DC circuit and DC-to-DC circuit also apply to desk top LED light which has built-in plurality of LED(s) inside the LED(s) compartment or replaceable/detachable CFL or LED bulbs for desk top LED lighting device. Further, the device has built-in optional outlets to supply AC power to be-supplied products. The device has export power from USB-port is one of (a) min. 1 A or (b) 3.1 to 10 Amp or (c) 12 Watt to 60 Watt to make regular or quickly charging functions.