An electrical connector has a test terminal, a positive terminal, and a negative terminal coaxially mounted in a connector base. The negative terminal surrounds the positive terminal. An insulating cap is mounted between the positive terminal and the negative terminal. A pair of turning engaging parts is formed between the ring body of the insulating cap and the internal surface of the negative terminal and the turning engaging parts are engaged with each other to assemble the insulating cap with the negative terminal by turning the insulating cap. An annular groove is formed in a top of the insulating cap to increase a creepage distance between the negative terminal and the positive terminal to meet requirement of safety specifications.

An electrical connector has a test terminal, a positive terminal, and a negative terminal coaxially mounted in a connector base. The negative terminal surrounds the positive terminal. An insulating cap is mounted between the positive terminal and the negative terminal. A pair of turning engaging parts is formed between the ring body of the insulating cap and the internal surface of the negative terminal and the turning engaging parts are engaged with each other to assemble the insulating cap with the negative terminal by turning the insulating cap. An annular groove is formed in a top of the insulating cap to increase a creepage distance between the negative terminal and the positive terminal to meet requirement of safety specifications.

A compact battery and voltage supply controller apparatus for a tattoo machine is disclosed. The battery and controller are configured to connect the battery to the tattoo machine through replaceable internally received magnetic connection adapters. The toggle switch operated display screen provides easy-to-view status and health of the battery and incremental voltage adjustment using a voltage boost circuit and adjustment knob. The internal battery can be replaced and/or removed and recharged.

Provided are a shielded terminal and a shielded connector that can prevent a short circuit between a connection portion for an electric component and an outer conductor. A shielded terminal includes an outer conductor, a connection portion for an electric component, and an insulator, wherein the outer conductor has a crimping portion that is crimped onto an end portion of a shielded wire, a bottom surface portion in which an opening is formed forward of the crimping portion, and side surface portions provided on both the left and right sides of the bottom surface portion, the connection portion is disposed between the left and right side surface portions and formed by connecting a center conductor of the shielded wire and the electric component to each other, and the insulator has left and right side walls that are located between the connection portion and the respective side surface portions.

Provided are a shielded terminal and a shielded connector that can prevent a short circuit between a connection portion for an electric component and an outer conductor. A shielded terminal includes an outer conductor, a connection portion for an electric component, and an insulator, wherein the outer conductor has a crimping portion that is crimped onto an end portion of a shielded wire, a bottom surface portion in which an opening is formed forward of the crimping portion, and side surface portions provided on both the left and right sides of the bottom surface portion, the connection portion is disposed between the left and right side surface portions and formed by connecting a center conductor of the shielded wire and the electric component to each other, and the insulator has left and right side walls that are located between the connection portion and the respective side surface portions.

An electric signal adapting device includes at least one first adapting interface and at least one first adaptor. The at least one first adapting interface comprises a magnetic component and a magnetic sensing component. The first adaptor is placed in correspondence with the first adapting interface. The first adaptor is electrically connected to each of the corresponding at least one first adapting interface for transferring the DC electric signal and connecting the DC electric signal to an external device. The magnetic component is configured to attract the at least one first adaptor. The magnetic sensing component is configured to determine whether the at least one first adaptor is correctly placed. When the magnetic sensing component determines that the at least one first adaptor is correctly placed, the at least one first adapting interface transfers the DC electric signal to the at least one first adaptor.

An electrical multi-conductor cable comprising a plug-in connector, in particular a line with a charging plug for electric vehicles. The cable has a central cable core, a number of conductors which are arranged concentrically in relation to one another in a ring around the cable core and are composed of individual wires, and in each case one insulation between the conductors. According to the invention, the contact apparatus has two clamping shell parts which, on the inner side thereof, have a plurality of receptacles which are radially stepped from one another. In each case one contact body is received in the receptacles of a clamping shell part and makes contact with one of the concentric conductors. Each contact body has a channel shape with a longitudinal extent and a curved cross-sectional profile around an associated conductor. A closure connects the clamping shell parts and fastens said clamping shell parts in the closed position, wherein the clamping shell parts coaxially hold the contact bodies and press each contact body against the respectively associated concentric conductor for contact-making purposes.

An electrical multi-conductor cable comprising a plug-in connector, in particular a line with a charging plug for electric vehicles. The cable has a central cable core, a number of conductors which are arranged concentrically in relation to one another in a ring around the cable core and are composed of individual wires, and in each case one insulation between the conductors. According to the invention, the contact apparatus has two clamping shell parts which, on the inner side thereof, have a plurality of receptacles which are radially stepped from one another. In each case one contact body is received in the receptacles of a clamping shell part and makes contact with one of the concentric conductors. Each contact body has a channel shape with a longitudinal extent and a curved cross-sectional profile around an associated conductor. A closure connects the clamping shell parts and fastens said clamping shell parts in the closed position, wherein the clamping shell parts coaxially hold the contact bodies and press each contact body against the respectively associated concentric conductor for contact-making purposes.

A heavy-duty, harsh environment coaxial connector assembly includes a mounting shell connector including a cylindrical body and an electrically conductive mounting flange extending from the cylindrical body, a plurality of mounting apertures formed in the flange to support the mounting shell connector via a plurality of fasteners extending through the respective mounting apertures, and wherein each of the plurality of fasteners is electrically isolated from the mounting flange.

A heavy-duty, harsh environment coaxial connector assembly includes a mounting shell connector including a cylindrical body and an electrically conductive mounting flange extending from the cylindrical body, a plurality of mounting apertures formed in the flange to support the mounting shell connector via a plurality of fasteners extending through the respective mounting apertures, and wherein each of the plurality of fasteners is electrically isolated from the mounting flange.