In accordance with at least one aspect of this disclosure, a system can include a main board, two or more redundant CPUs for any number of channels operatively connected to the main board and two or more power sources operatively connected to provide power to at least one or more of the two or more CPUs. A respective isolated communications block can be operatively connected to each of the two or more CPUs configured to provide external communications from other components on the main board to a respective CPU.

A charger, a data cable, and a charging device. The charger includes a first Type-A port, a PD charging processing unit, a non-PD charging processing unit, a data cable matching unit, and a first switching unit; where the first Type-A port includes a first communication pin and a second communication pin, and in a case that the charger is connected to a first data cable, the first switching unit connects the first communication pin to the PD charging processing unit and the second communication pin to the data cable matching unit to transmit a PD charging signal through the first communication pin, where the data cable matching unit determines, based on a communication signal transmitted through the second communication pin, whether the data cable is a first data cable.

Provided herein is a power distribution system comprising a feedback circuit including a transistor in series with a relay, the feedback circuit regulating regulate a main power path including a main power supply connected in series with an electric power converter. The power distribution system further comprises OR-ing controllers that regulate the main power path and a backup power path including a low-voltage battery. The power distribution system further comprises terminals through which power from the main power path or the backup power path is transmitted to respective components corresponding to channels. The power distribution system further includes a microcontroller that acquires data in each of the channels and control operations associated with each of the channels based on the acquired data.

A multi-channel power controller includes a main controller communicatively coupled to a plurality of standard power control circuit boards. Each of the standard power controller circuit boards includes a nexus having a plurality of virtual channels and a plurality of solid state power controllers. Each of the solid state power controllers is controlled by one of the virtual channels. A plurality of physical control channels operable to control power to at least one load. Each physical control channel of the plurality of physical control channels is controlled by a corresponding solid state power controller of the plurality of solid state power controllers. At least one of the virtual channels controls more than one of the physical control channels in the plurality of physical control channels.

A vehicle power supply control device includes a plurality of area power supply slaves connected with respective different device groups configured with a plurality of different devices installed in a vehicle, and controlling power supplied to the devices in the connected device groups, a plurality of area power supply masters that are connected with respective different area power supply slaves and control power supplied to the connected area power supply slaves, and a vehicle power supply master connected with the area power supply masters and a battery of the vehicle and controlling power supplied to the area power supply masters from the battery.

A method for controlled connection of a plurality of on-board power system branches is disclosed, wherein electrical power is exchanged between first and third on-board power system branches if an uncritical supply state is present and electrical power is exchanged between second and the third on-board power system branches if a critical supply state is present in the first or third on-board power system branch. In a critical supply state, the first on-board power system branch is disconnected from the third on-board power system branch by opening a first switching device, and the second on-board power system branch is then connected to the third on-board power system branch via a second switching device. A second actuation device that actuates the second switching device receives a switch state signal from the first actuation device and closes the second switching device only if the received signal signals an open first switching device.

A method for controlled connection of a plurality of on-board power system branches is disclosed, wherein electrical power is exchanged between first and third on-board power system branches if an uncritical supply state is present and electrical power is exchanged between second and the third on-board power system branches if a critical supply state is present in the first or third on-board power system branch. In a critical supply state, the first on-board power system branch is disconnected from the third on-board power system branch by opening a first switching device, and the second on-board power system branch is then connected to the third on-board power system branch via a second switching device. A second actuation device that actuates the second switching device receives a switch state signal from the first actuation device and closes the second switching device only if the received signal signals an open first switching device.

Apparatus 11 and 13 for interfacing two AC sources with two AC loads 17a 17b in the form of solenoid operated valves over a single conductor 25, with a return conductor 19 in an irrigation system is disclosed. The apparatus has an encoder circuit 11 with two inputs 21a 21b for connection to the two AC sources, and an output 23 for connection to the single conductor 25, and a decoder circuit 13 having an input 27 for connection to the conductor 25, and two outputs 29a 29b for connection to loads 17a 17b respectively. When the first input 21 a is powered, the first load 17a will be switched on, and when the second input 21b is powered, the second load 17b will be switched on. The decoder portion 13 incorporates switching circuits 43a 43b, interfaced with turn on delay timers 45a 45b respectively, to delay operating the loads at switch on, and turn-off delay timers 47a 47b to hold the loads on after switch off.

A battery combiner may be used to electrically isolate first and second batteries during conditions in which a first battery required for a mechanical drive system may experience excessive power draw. The second battery may be used to provide a switched and/or continuous power source to a control system and/or other electrical devices for reliable operation, and the combiner may join the first and second batteries together such that both are electrically charged by a single alternator during conditions when it is safe.

A battery combiner may be used to electrically isolate first and second batteries during conditions in which a first battery required for a mechanical drive system may experience excessive power draw. The second battery may be used to provide a switched and/or continuous power source to a control system and/or other electrical devices for reliable operation, and the combiner may join the first and second batteries together such that both are electrically charged by a single alternator during conditions when it is safe.