A power system including a load terminal, a sensor, and an electronic processor. The load terminal is configured to electrically connect to a load device. The sensor is configured to sense an electrical characteristic of the load device. The electronic processor is configured to receive, via the sensor, the electrical characteristic of the load device, supply power, via the load terminal, to the load device, discontinue supply of power to the load device when the electrical characteristic of the load device crosses a predetermined threshold, and enter a standby mode upon discontinuing supply of power to the load device. Wherein when in standby mode the electronic processor, at predetermined time intervals, determines if the load device crosses the predetermined threshold a second time.

This invention relates generally to security covers for electrical appliances which are powered by mains electricity. More specifically it relates to security covers to operate the electrical appliances by authorised users locally or remotely via an authorisation device via a network such as the internet. The security cover houses a switch and includes an authorisation device for enabling an authorised person to control a power supply, via the switch, to an electrical device or appliance. The security cover has an input means adapted to receive an authorisation signal; the switch is operative in response to the authorisation signal and a command signal in order to connect and disconnect the power supply to the device or appliance.

A plug-in power adapter is described. The plug-in power adapter may comprise a plug having a plurality of prongs, wherein a first prong of the plurality of prongs is adapted to receive power; a transformer coupled to receive the power from the first prong of the plurality of prongs, wherein the transformer generates a power signal on a power signal line coupled to the transformer; a plurality of contact elements accessible on the plug-in power adapter by a user of the plug-in power adapter; and a wireless communication circuit adapted to receive signals using a wireless communication protocol; wherein a contact element of the plurality of contact elements is adapted to receive a control signal.

A smart electrical plug supports one or more electrical outlets and one or more universal serial bus (USB) outlets for charging electrical devices. Electrical power consumed through the one or more electrical outlets may be measured individually or in combination and reported via a wireless communication channel. The smart electrical plug may be implemented by a plurality of printed circuit board assemblies and distributed within a housing to reduce the effects of heat dissipation. The smart electrical plug may further reduce heat dissipation by utilizing one or more electrical circuit approaches.

A USB Type-C/Power Delivery controller chip includes a first pin for receiving a first voltage, a second pin for receiving a second voltage, and a third pin for coupling to the CC pin of a USB connector. The USB controller chip includes a VCONN power supply circuit having a blocking field effect transistor (BFET) coupled in series with a hot-swap field FET (HSFET) between the first and third pins, and first and second Zener diodes coupled anode-to-anode between the HSFET's source and gate. A cable detection circuit includes a BFET coupled between the second and third pins, and a Zener diode coupled between the BFET's gate and a lower rail. A power delivery physical layer circuit includes a receiver and a transmitter, each coupled to the third pin through a respective BFET, the respective BFETs each having a Zener diode coupled between respective gates and the lower rail.

Provided herein is technology relating to providing power over a universal serial bus (USB) connection and particularly, but not exclusively, to devices, methods, and systems related to a (USB) technology for reducing energy consumption by a USB receptacle.

An electronic device including a PDIC, a charging IC, and a processor. The PDIC determines whether an external device is connected to the USB port, through a first pin of a USB port. The charging IC outputs a first voltage, which is a voltage obtained by boosting a voltage provided by a battery, to the external device through a second pin, when the external device is connected to the USB port. The processor is configured to determine whether the external device connected to the USB port is a first external device having a specified VID and a specified PID, through a third pin of the USB port, and to transmit a first signal, which controls the charging IC to output a second voltage having a magnitude less than the first voltage, to the charging IC when the first external device is connected to the USB port.

A plug-in power adapter is described. The plug-in power adapter may comprise a plug having a plurality of prongs, wherein a first prong of the plurality of prongs is adapted to receive power; a transformer coupled to receive the power by way of the first prong of the plurality of prongs, wherein the transformer is adapted to generate a power signal on a power signal line coupled to the transformer; an input portion comprising a control button, wherein the control button is accessible by a user of the plug-in power adapter; and a plurality of contact elements on a surface of the plug-in power adapter and accessible by the user of the plug-in power adapter; wherein a contact element of the plurality of contact elements is adapted to receive a control signal.

A connector apparatus with a power isolation capability that is designed to transmit electricity from a power source to an electrical device is provided. The connector apparatus includes a housing with an input connector designed to electrically couple to the power source and an output connector designed to electrically couple to the electrical device, and a power isolation chip disposed in the housing and having an input electrically coupled to the input connector of the housing and an output electrically coupled to the output connector of the housing. The power isolation chip is designed to isolate its negative and positive output terminals from its negative and positive input terminals, thereby minimizing the generation of interference in the connector apparatus that transfers to the electrical device.

An electronic apparatus connection cable includes: a first plug including a first power reception terminal; a first switch coupled to the first power reception terminal; a power transmission line coupled to the first switch; a second plug coupled to the power transmission line; and a first light emitting element coupled to the power transmission line. The distance between the first light emitting element and the second plug is smaller than a distance between the first emitting device and the first plug. When the first power reception terminal receives a first input voltage and the first switch is conducted, the first light emitting element emits light.