Methods and apparatus for electrical measurement are disclosed. An example electrical measurement device includes a conductive cable that includes a plurality of conductive filaments on a first end and an electrical connector on a second end, a cable mount that includes a base and an adjustable support attached to the base and the conductive cable to hold the plurality of conductive filaments in contact with a rotating element of a device under test during a measurement operation, with the conductive cable forming a portion of a circuit when the plurality of conductive filaments are in contact with the rotating element of the device under test and the electrical connector is in contact with an output.

A cable for supporting an electronic device having a display. The cable including: a body having two or more elongated wires twisted together to form a helically wound pair of wires having two ends; and a connector disposed at each end, each connector having first and second jaws rotatably disposed relative to each other about a pivot joint so as to be openable and closable, the first and second jaws having first and second plates, respectively, extended from the pivot joint, the first and second plates being biased towards each other and configured to hold the electronic device so as to direct the display to a user; wherein at least a portion of the body has a rigidity such that it can be shaped into a predetermined configuration and maintained in the predetermined configuration under a weight of the electronic device with the display being directed to the user.

A cable for supporting an electronic device having a display. The cable including: a body having two or more elongated wires twisted together to form a helically wound pair of wires having two ends; and a connector disposed at each end, each connector having first and second jaws rotatably disposed relative to each other about a pivot joint so as to be openable and closable, the first and second jaws having first and second plates, respectively, extended from the pivot joint, the first and second plates being biased towards each other and configured to hold the electronic device so as to direct the display to a user; wherein at least a portion of the body has a rigidity such that it can be shaped into a predetermined configuration and maintained in the predetermined configuration under a weight of the electronic device with the display being directed to the user.

A jumper cable assembly that comprised of a first jumper unit and a second jumper unit. One jumper cable has a port while another jumper cable has a plug. The plug and the port are designed to be connected to one another. Once the two jumper units are connected to another, a full jumper cable set is formed. Each jumper unit has a positive cable and a negative cable. Each negative cable and positive cable have a clamp connected one of end. The inner surface of each clamp is equipped with teeth.

A jumper cable assembly that comprised of a first jumper unit and a second jumper unit. One jumper cable has a port while another jumper cable has a plug. The plug and the port are designed to be connected to one another. Once the two jumper units are connected to another, a full jumper cable set is formed. Each jumper unit has a positive cable and a negative cable. Each negative cable and positive cable have a clamp connected one of end. The inner surface of each clamp is equipped with teeth.

An extension cord system designed for the safe and efficient transfer of electrical power from a conventional main breaker box to a power source, such as a generator, thereby providing electrical power for worksites and buildings without requiring electrical hookups. The extension cord system comprises a main wire with integrated split wires at one end and a three-prong plug at the other end, providing compatibility with standard electrical configurations. The split wires include a hot wire with alligator or electrical clips for secure connection to the breaker box's hot bar(s), a neutral wire with an alligator or electrical clip attached to the neutral bar, and a ground wire with an alligator or electrical clip for grounding to the ground bar. The three-prong plug is plugged into the generator for enabling users to run lights and equipment using the generator.

An extension cord system designed for the safe and efficient transfer of electrical power from a conventional main breaker box to a power source, such as a generator, thereby providing electrical power for worksites and buildings without requiring electrical hookups. The extension cord system comprises a main wire with integrated split wires at one end and a three-prong plug at the other end, providing compatibility with standard electrical configurations. The split wires include a hot wire with alligator or electrical clips for secure connection to the breaker box's hot bar(s), a neutral wire with an alligator or electrical clip attached to the neutral bar, and a ground wire with an alligator or electrical clip for grounding to the ground bar. The three-prong plug is plugged into the generator for enabling users to run lights and equipment using the generator.

An all-angle ground clamp comprising a clamp body. There is a clamping mechanism affixed to an upper portion of the clamp body and which is removably attached to an electric conductor to be grounded. There is a terminal member having a mount portion releasably affixed to the base portion of the clamp body and a connector portion connected to an electrical ground conductor. The clamp body is rotatable relative to the terminal member about the mount portion is in a released position and is fixed relative to the terminal member when the mount portion is in a secured position. There is an electrical shunt having a first end connected to the clamping mechanism and a second end connected to the base portion of the clamp body for establishing a parallel electric path between the clamping mechanism and the base portion of the clamp body.

An all-angle ground clamp comprising a clamp body. There is a clamping mechanism affixed to an upper portion of the clamp body and which is removably attached to an electric conductor to be grounded. There is a terminal member having a mount portion releasably affixed to the base portion of the clamp body and a connector portion connected to an electrical ground conductor. The clamp body is rotatable relative to the terminal member about the mount portion is in a released position and is fixed relative to the terminal member when the mount portion is in a secured position. There is an electrical shunt having a first end connected to the clamping mechanism and a second end connected to the base portion of the clamp body for establishing a parallel electric path between the clamping mechanism and the base portion of the clamp body.

The present invention provides a battery clamp, comprising: a first and second wire clamps and a control device. Each of the first and second wire clamps is electrically connected to the control device. The control device comprises: a housing; a master-control board mounted within the housing; and connectors disposed at one side of the housing, and being electrically connected to the master-control board, comprising: at least a first and second electrode connectors, which are connected to an external power supply for receiving power, and at least one communication connector connected to the external power supply for building a communication connection between the battery clamp and the external power supply. The battery clamp is communicatively connected to the external power supply by the communication connector, thereby effectively solving the problems of a lithium battery in an external power supply e.g. battery bulge or explosion resulted from improper uses.