Methods, structures, and apparatus that are able to detect the presence of liquid, moisture, or other contaminants in or on a connector. Examples provide a connector having a dedicated liquid-detect contact that does not have a corresponding contact in a corresponding connector. Examples provide liquid-detect circuitry that can use the liquid-detect contact to determine the presence of a liquid on or in the connector and can perform self-diagnostic tests such as continuity checks and calibration.

A connector used in underwater environments includes a male connector with a sensing terminal and two power terminals, a female connector with a sensing terminal block and two power terminal blocks, and an elastic gasket set between the male connector and the female connector. When the male connector and the female connector are plugged into each other, and the male and female connectors squeeze the elastic gasket to form a large amount of deformation, the sensing terminal and the sensing terminal block are in contact with each other. When the male and female connectors squeeze the elastic gasket to form a small deformation state, the sensing terminal and the sensing terminal block are separated from each other, and the power terminals and the power terminal blocks are in contact with each other, thereby forming a waterproof protection mechanism.

Provided is a charging controller that controls a process of charging a battery from an external power source. When an outside air temperature is equal to or lower than a predetermined temperature, the charging controller charges the battery from a time earlier than a scheduled time of use of the battery by a predetermined time until the scheduled time of use. Thus, even when the outside air temperature is equal to or lower than the predetermined temperature, the temperature of the battery has been raised by heat generated during the charging by the time of use of the battery.

A vehicular electrical plug or connector is provided. In another aspect, an electrical connector includes a wire cable having a first end that is permanently connected to a wheeled recreational vehicle, a second end with an outlet-engageable plug thereon, and a switch allowing for a high potential or dielectric withstand test by the vehicle manufacturer in one switch condition, and then the switch allowing for normal use while detecting and/or alerting a user of an electrical ground and/or polarity problem in another switch condition. A further aspect of an electrical connector employs multiple lights on a plug, one of which alerts a user of an electrical ground and/or polarity problem, and another of which is illuminated when electricity is flowing through the plug. Another aspect of a vehicular electrical plug and method of manufacturing same, includes liquid polyurethane fed into a hole in a plug housing which then fills the otherwise open area therein to create a water-resistant seal for the plug.

A controllable electrical outlet may be used to control one or more standard electrical outlets. The controllable electrical outlet may include a first connection configured to be electrically coupled to a hot connection, a second connection configured to be electrically coupled to a standard electrical outlet, and a third connection configured to be electrically coupled to a neutral connection. The controllable electrical outlet may also include a load control circuit, a communication circuit, and a control circuit. The load control circuit may be electrically coupled in series between the first and second screw terminals to control power delivered to the standard electrical outlet, and the control circuit may be coupled to the load control circuit and the communication circuit. The control circuit may be configured to control power delivered to the standard electrical outlet in response to a wireless signal received via the communication circuit.

The present invention relates to a medical coupling unit for electrical signal transmission between the medical coupling unit (1, 1a, 1b) and a medical sensor (2, 2a) coupled to the medical coupling unit. The medical coupling unit comprises a coupling-side connector (10) comprising a plurality of first electrical contacts (11) in or on a first surface (12) and a plurality of second electrical contacts (13) in or on a second surface (14) opposite the first surface, and a connector interface (15) for analyzing electrical signals available at one or more of the plurality of first and second electrical contacts (11, 13) to detect one or more of presence of a medical sensor coupled to the medical coupling unit, the type of medical sensor coupled to the medical coupling unit, and the orientation of a sensor-side connector of a medical sensor coupled to the medical coupling unit. The present invention relates further to a sensor-side connector (20).

An electronic power connector including a contact configured to electrically connect a power supply to a load. The electronic power connector further including a contact core configured to receive the contact, the contact core including a transformer winding wrapped around the contact core, the transformer winding configured to sense a current.

An electrification arrangement is provided for simplifying changes to the system, such as adding new electrical loads. The arrangement includes a power supply bus that routes available electric power throughout a facility. Electrical loads may be connected to the power supply bus using smart connectors that provide electrical protection and control of respective electrical loads.

A radio frequency connector for establishing a radio frequency connection with a radio frequency device is described. The radio frequency connector includes a radio frequency connection interface, an interchangeable radio frequency adapter and a positioning member. The interchangeable radio frequency adapter is detachably attached with the radio frequency connection interface such that the interchangeable radio frequency adapter is configured to be detached from the radio frequency connection interface in a disassembled state of the radio frequency connector. The positioning member is configured to position the interchangeable radio frequency adapter with respect to the radio frequency connection interface in an assembled state of the radio frequency connector. The positioning member is detachably attached such that the positioning member is configured to be detached in the disassembled state of the radio frequency connector, thereby releasing the interchangeable radio frequency adapter with respect to the radio frequency connection interface. Further, a measurement system for radio frequency measurement is described.

A temperature measuring device for measuring a temperature of a terminal of an electrical connector includes a printed circuit board, a temperature sensor mounted on the printed circuit board, and a thermally conductive sleeve having a first thermally conductive portion and a second thermally conductive portion. The first thermally conductive portion has a recess receiving a part of the printed circuit board. The first thermally conductive portion is in thermal contact with the temperature sensor. The second thermally conductive portion forms a flexible tab extending from the first thermally conductive portion and contacting the terminal.