An electrical connection includes a first electrical conductor assembly having a first electrical conductor with a first electrical conductor surface and a second electrical conductor assembly having a second electrical conductor with a second electrical conductor surface which is engaged with the first electrical conductor surface such that the second electrical conductor assembly and the first electrical conductor assembly reciprocate relative to each other along a path. The first electrical conductor surface and the second electrical conductor surface provide electrical communication between the first electrical conductor assembly and the second electrical conductor assembly along the path. The second electrical conductor surface has a first area of gold having a first magnitude of hardness which engages the first electrical conductor surface and also has a second area of gold having a second magnitude of hardness which is greater than the first magnitude of hardness.

The present application is discloses a battery assembly and an electronic cigarette. The battery assembly comprises: a battery sleeve, a battery sleeved within the battery sleeve, a control module electrically connected to the battery, and an adjustable resistor electrically connected to the control module. One end of the battery sleeve is movably sleeved with an adjustment mechanism used for adjusting the adjustable resistor. The adjustable resistor is adjusted via rotating and pressing the adjustment mechanism, and the output power of the battery assembly is thereby adjusted. When in a normal state, the adjustment mechanism is accommodated within the battery sleeve, preventing false operation. When adjustment of the output power of the battery assembly is required, the adjustment mechanism is extended out of the battery sleeve for adjustment to be performed. Adjustment is convenient and fast, and user experience is improved.

An operation member for an electronic device is provided. The electronic device includes a casing having portions defining an opening and a circuit module having a circuit board. The circuit board includes a controller. The operation member includes a body including an operating end and a coupling end, and a skirt member. The body is configured to partially protrude through the opening of the casing for operating. The skirt member is arranged at the coupling end. The skirt member includes a base plate outwardly extending from the coupling end, a wall upwardly extending from peripheral portions of the base plate, and a groove defined between the wall and the body. The operation member is configured to associate with the electronic device, and the operation member with the body and the skirt is completely separated from the casing.

A rotary variable resistor includes an insulating substrate, a resistor pattern and a current collector pattern that are provided on the insulating substrate, a rotor that is mounted on the insulating substrate in a rotatable manner, and a slider that is mounted on the rotor and makes sliding contact with the resistor pattern and the current collector pattern to cause the resistor pattern and the current collector pattern to be conducted to each other. When a maximum dimension of the resistor pattern, which defines a variable resistor, is Z [mm] and electric linearity is L [%], Z4.0 and ZL<10 are satisfied.

A rotary variable resistor includes an insulating substrate, a resistor pattern and a current collector pattern that are provided on the insulating substrate, a rotor that is mounted on the insulating substrate in a rotatable manner, and a slider that is mounted on the rotor and makes sliding contact with the resistor pattern and the current collector pattern to cause the resistor pattern and the current collector pattern to be conducted to each other. When a maximum dimension of the resistor pattern, which defines a variable resistor, is Z [mm] and electric linearity is L [%], Z4.0 and ZL<10 are satisfied.

A fuel sender device for a vehicle may include a resistance substrate having a conductor part, a contact plate having a contact point contacting the conductor part, and a float unit moving up and down according to a variation of an oil surface and angularly rotating the contact plate, wherein the fuel sender device includes a variable contact point that allows the contact plate to variably contact the conductor part while moving up and down and rotating according to the variation of the oil surface.

A fuel sender device for a vehicle may include a resistance substrate having a conductor part, a contact plate having a contact point contacting the conductor part, and a float unit moving up and down according to a variation of an oil surface and angularly rotating the contact plate, wherein the fuel sender device includes a variable contact point that allows the contact plate to variably contact the conductor part while moving up and down and rotating according to the variation of the oil surface.

Method and apparatus for attaching an electrical component to a printed circuit board. The apparatus includes a circuit board, an elastomeric connector, a rotary electrical component having a connector housing for holding the elastomeric connector, and one or more fasteners for securing the electrical component to the circuit board with sufficient force to compress the elastomeric connector and thereby ensure electrical contact between the electrical component and the printed circuit board.

An electrical assembly including a conductor arrangement and a dual resolution potentiometer electrically connected to the conductor arrangement. The dual resolution potentiometer includes a first resistive element having a first adjustment mechanism and a second resistive element having a second adjustment mechanism. The first adjustment mechanism being coupled in a hysteresis arrangement to the second adjustment mechanism.

An electrical assembly including a conductor arrangement and a dual resolution potentiometer electrically connected to the conductor arrangement. The dual resolution potentiometer includes a first resistive element having a first adjustment mechanism and a second resistive element having a second adjustment mechanism. The first adjustment mechanism being coupled in a hysteresis arrangement to the second adjustment mechanism.