A circuit to protect an overvoltage in a universal serial bus (USB) device include an overvoltage protection (OVP) switch connected to a pin of a USB receptacle and a switch controller to turn off the OVP switch when an overvoltage is detected such that power between the pin and the USB device is interrupted. The switch controller supplies a control signal to the OVP switch such that the OVP switch has a first on-resistance when the USB device is operating in a normal mode and no overvoltage is detected, and has a second on-resistance, higher than the first on-resistance, when the USB device is operating in a low-power mode and no overvoltage is detected.

A camera tripod with surge protector outlets is provided. The device includes a central shaft affixed to a base. A plurality of support legs is pivotally affixed to the base, wherein each of the plurality of support legs is telescopically adjustable in length. The base removably secures a camera thereto via a threaded connection. At least one surge protected outlet is affixed to one of the plurality of support legs, wherein the surge protected outlet is electrically connected to an external power source. In some embodiments, the surge protected outlet is electrically connected to one or more batteries removably secured within a battery compartment defined within an interior volume of the central shaft.

A sliding power contact and method includes a mobile load device connector and a socket. The mobile load device connector includes a non-current power pin having a first length, a current power pin having a second length less than the first length, a neutral pin, and a ground pin. The socket includes a non-current power contact configured to electrically couple with the non-current power pin, a current power contact configured to electrically couple with the current power pin, a neutral contact configured to electrically couple with the neutral pin, and a ground pin configured to electrically couple with the ground pin. An arc suppressor is directly coupled to at least one of the non-current power pin and the non-current power contact, wherein the arc suppressor, the non-current power pin and the non-current power contact form a current path between the current power pin and the current power contact.

An arc suppressing circuit configured to suppress arcing across a power contactor coupled to an alternating current (AC) power source having a predetermined number of phases, each contact of the power contactor corresponding to one of the predetermined number of phases includes a number of dual unidirectional arc suppressors equal to the predetermined number of phases of the AC power source. Each dual unidirectional arc suppressor includes a first phase-specific arc suppressor configured to suppress arcing across the associated contacts in a positive domain, a a second phase-specific arc suppressor configured to suppress arcing across the associated contacts in a negative domain, and a coil lock controller, configured to be coupled between a contact coil driver of the power contactor, configured to detect an output condition from the contact coil driver and inhibit operation of the first and second phase-specific arc suppressors over a predetermined time.

A circuit to protect an overvoltage in a universal serial bus (USB) device include an overvoltage protection (OVP) switch connected to a pin of a USB receptacle and a switch controller to turn off the OVP switch when an overvoltage is detected such that power between the pin and the USB device is interrupted. The switch controller supplies a control signal to the OVP switch such that the OVP switch has a first on-resistance when the USB device is operating in a normal mode and no overvoltage is detected, and has a second on-resistance, higher than the first on-resistance, when the USB device is operating in a low-power mode and no overvoltage is detected.

A high speed arc suppressor and method include a first phase-specific arc suppressor configured to suppress arcing across contacts of the power contactor in a positive domain and a second phase-specific arc suppressor configured to suppress arcing across the contacts in a negative domain. First and second high speed switches are configured to enable and disable operation of an associated one of the first and second phase-specific arc suppressors. First and second drivers are configured to drive the first and second high speed switches.

An electrical connector body is provided includes first and second housing portions formed from molded plastic. The housing portions include first and second interface surfaces that are configured to butt against one another to define a housing and one or more electrical components are disposed within an interior of the housing. The one or more electrical components may comprise connectors of a male or female cord cap, an in-line surge suppression circuit, and/or a compact automatic transfer switch. In one implementation, each of the first and second connector body portions may include a strain relief extension for engaging an electrical cord and a compression member (3691) may be disposed over the strain relief extensions to secure together the first and second connector body portions. The compression member may be selected from a set of compression members based on a size of the electrical cord.

A smart adapter includes an insulating body, a plug fastened to the insulating body, at least one socket, at least one seven-segment displayer, at least one button and a main control unit. The at least one socket is mounted in the insulating body and is exposed to a front surface of the insulating body. The at least one seven-segment displayer is mounted in the insulating body. The at least one button is mounted in the insulating body and is exposed to the insulating body. The main control unit is mounted in the insulating body and is connected with the at least one socket, the plug and the at least one seven-segment displayer. The main control unit includes a cloud unit and a central processing unit. The cloud unit is connected to the at least one button and the central processing unit.

A vehicle power adaptor module includes a vehicle-sided connector and an interchangeable socket. The vehicle-sided connector includes a connector body and a first connecting portion. The first connecting portion is connected with the connector body. The connector body is configured to electrically connect with an electric vehicle. The interchangeable socket includes a socket body and a second connecting portion. The second connecting portion is connected with the socket body. The socket body is configured to electrically connect with an electronic equipment. The second connecting portion is configured to detachably connect with the first connecting portion.

A Universal Serial Bus (USB) device includes a USB Type-C connector having a configuration channel (CC) terminal and an integrated circuit (IC) controller. The IC controller comprises a VCONN pin coupled to the CC terminal of the USB Type-C connector, an output terminal, and an on-chip voltage protection circuit coupled between the VCONN pin and the output terminal. The on-chip voltage protection circuit comprises a switch coupled between the VCONN pin and the output terminal, a pump logic coupled to a gate of the switch, a resistor coupled between the VCONN pin and the gate of the switch, and a diode clamp coupled between the gate of the switch and ground.