A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.

Bidirectional detection is performed with a suppressed increase in return loss at an output terminal. A bidirectional coupler includes a detection port, a main line connected to a first port and a second port, a sub-line, a termination circuit, a switch circuit that switches each of one end and another end of the sub-line to the termination circuit or the detection port, and a matching network disposed between the switch circuit and the detection port and including at least one of a first variable capacitor, a first variable inductor, or a first variable resistor. In a first mode for detecting a first signal, the switch circuit connects the one end of the sub-line to the detection port, and connects the other end of the sub-line to the termination circuit.

A connecting element with a screw-in element and a contact element. The screw-in element is pin-shaped and extends along a longitudinal axis, has a thread on its first free end, a drive profile and a reception on its second free end, wherein the contact element is arranged in the reception with its first free end and has a connecting pin on its second free end that extends beyond the screw-in element in the direction of the longitudinal axis, wherein the contact element has a spring that is arranged between the screw-in element and the connecting pin.

A loadbreak electrical connector includes a connector body having first and second passages therewithin and a safety probe configured to be installed within the first passage. The safety probe includes a conductive probe body extending between first and second ends, the probe body having a probe aperture at the second end and a probe pin connected to the probe body via the probe aperture. The safety probe includes an arc quenching section located at a distal end of the probe pin and has a resistance section located between the second end of the probe body and the arc quenching section. The resistance section is made of a highly resistance material which reduces current flow through this section of the safety probe.

A connector-assembly includes a housing, a terminal-position-assurance device, and a resistor-assembly. The housing includes a plurality of electrical-terminals. The terminal-position-assurance device is configured to retain the plurality of electrical-terminals within the housing. The resistor-assembly is disposed within the terminal-position-assurance device and includes a first-spring-terminal, a second-spring-terminal, and a resistor disposed between the first-spring-terminal and the second-spring-terminal. The first-spring-terminal and the second-spring-terminal are in separate electrical-communication with at least one of the plurality of electrical-terminals. The resistor has connection-leads disposed within slots formed in both the first-spring-terminal and the second-spring-terminal, and is disposed within channels formed in the terminal-position-assurance device. The first-spring-terminal, the second-spring-terminal, and the terminal-position-assurance device are in compressive contact with a portion of the connection-leads.

A connector comprises a terminal and a layered circuit substrate. The layered circuit substrate connects to an end of the terminal, and comprises a PTC material layer, a first electrode layer forming an upper layer of the layered circuit substrate, and a second electrode layer forming a lower surface of the layered circuit substrate. The PTC material layer is disposed between the first and second electrode layers. The first and second electrode layers comprise first and second electrode pads which connect to a power supply, and the PTC material layer electrically connects to the first and second electrode pads to form an electrically conductive path in which the PTC material layer serves as a PTC resistor in series connection between the first and second electrode pads. When over-current or over-temperature occurs in the electrically conductive path, the PTC resistor will trip to a high resistance state.

A plug-in module circuit board includes a plurality of plug-in modules attached to each other side-by-side in a lateral longitudinal row. Each of the plurality of plug-in-modules has an electrical contact and each of the electrical contact housings has at least one outer surface with a latching structure, a pair of upper guide bores a pair of electrical contacts ad pair of locking devices in the pair of upper guide bores, and a common electrical voltage connection in communication with each of the electrical contacts such that each of the electrical contacts has a common electrical voltage provided thereto. One connecting leg of a light emitting diode (LED) is locked in one electrical contact housing and another connecting leg of the LED is locked in an adjacent electrical contact housing such that each leg of the LED has a different polarity voltage applied thereto.

In one embodiment, as apparatus includes a cable identifier for attachment to a plug and cable assembly operable to deliver Power over Ethernet (PoE) at a power greater than 90 watts, the plug and cable assembly receivable in a receptacle delivering the PoE. The cable identifier is configured for mating with the receptacle and includes an electrical identifier for use in identifying a power rating of the cable when the plug and cable assembly is inserted into the receptacle. A method and network device are also disclosed herein.

There is provided a power connector system for electrically connecting a power source to a device. The power connector comprises a first component and a second component which each have a plurality of electrical contacts disposed on a face thereof. The contacts each include an electrically resistive element having an impedance. When the first and second components are coupled, a logic unit controls enables current flow between the first and second components based on the impedances.

Disclosed herein are a connection cable, an antenna connection diagnosis device, a vehicle including the same, and an antenna connection diagnosis method. The antenna connection diagnosis device includes a first cable having a first connector installed at one end thereof and a first connection diagnosis connector installed at the other end. A second cable has a second connector, which is capable of being coupled to the first connection diagnosis connector, formed at one end thereof. A diagnoser is configured to diagnose whether the first cable and the second cable are connected using the first connection diagnosis connector.