A sliding variable resistor includes a sliding base, a first supporting pole, two buffering members, a substrate, a casing assembly, an anchoring plate, a driving member, a driven member, a belt, and a belt guard. The sliding base includes two first through hole and at least one variable resistor sheet. The first supporting pole is inserted into the two first through hole. The first supporting pole has its two ends abut against the first buffering seats, respectively. The substrate is engaged with the two buffering members. The two buffering members are arranged in the casing assembly. The anchoring plate is fixedly arranged on the casing assembly. The belt is engaged with the driving member and the driven member, respectively. The belt guard is fastened to the sliding base, and is engaged with the belt. As such, the sliding base, while sliding, can have an improved smoothness.

An electronic module is provided including: a circuit board including conductive pads and a sense pad coupled to an output signal; an actuator having a wiper member accommodating a conductive wiper, the wiper having a first end arranged to slidably engage the sense pad and a second end arranged to slidably engage at least one of the conductive pads; and at least one gap disposed to partition the sense pad into segments along an axial movement path of the conductive wiper, the segments being electrically connected to each other to have the same electric potential.

A variable-speed controller for use with an electric device including: a variable resistor element having a variable resistor element contact surface; a membrane including a first membrane contact surface spaced-apart from the variable resistor element contact surface by a spacer element, and, a second membrane contact surface; a slider configured for slidable movement along the second membrane contact surface wherein responsive to the slider slidably moving along the second membrane contact surface, the first membrane contact surface is able to be urged into contact with the variable resistor element contact surface in a plurality of contact point configurations whereby the effective resistance of the variable resistor element is configured to change in response to the first membrane contact surface being urged into contact with the variable resistor element contact surface in each of the plurality of contact point configurations.

A speed control switch includes a base. An upper end of the base is provided with a switch assembly. A side of the base is provided with a PCB board and a slide terminal. The PCB board is provided with a first contact plate. The slide terminal is slidably connected with the first contact plate. The base is provided with a trigger assembly for driving the slide terminal to slide along the first contact plate and to close the switch assembly. The speed control switch can regulate the speed of a motor precisely. The structure is compact to reduce the size of the switch, so that it is convenient for operation.

The invention relates to an electric switch for electrical devices having a circuit board immovably arranged in a switch housing said circuit board including on one of its surfaces the contact paths of a contact system as well as contact surfaces in the form of potentiometer tracks. The contact paths interact with sliding contacts of the contact system and the potentiometer tracks interact with additional sliding contacts in order to set the revolutions per minute or the torque of the electric motor, wherein movement of the plunger causes the sliding contacts of the contact system to come into contact with the associated contact paths, and, in this position of the plunger, which is the on position of the switch, the sliding contacts used for changing the direction of rotation are in the same way already in contact with the associated potentiometer tracks on the circuit board.

A dimmer switch includes a housing having a frame having a single actuator opening therethrough. The opening has first and second portions. A controllably conductive device is disposed in the housing for adjustably controlling electrical power to a load. A pivotable toggle actuator is accessible through the first portion of the single actuator opening and pivotable between a first and second positions by a user. A slidable dimmer actuator is accessible through the second portion of the single actuator opening. The slidable dimmer actuator is slidable linearly within the second portion of the single actuator opening anywhere between first and second positions by a user. The pivotable toggle actuator is operable for controlling the controllably conductive device to turn on and off power to the load, and the slidable dimmer actuator is operable for controlling the controllably conductive device to adjustably control the level of power to the load.

A speed control switch includes a base. An upper end of the base is provided with a switch assembly. A side of the base is provided with a PCB board and a slide terminal. The PCB board is provided with a first contact plate. The slide terminal is slidably connected with the first contact plate. The base is provided with a trigger assembly for driving the slide terminal to slide along the first contact plate and to close the switch assembly. The speed control switch can regulate the speed of a motor precisely. The structure is compact to reduce the size of the switch, so that it is convenient for operation.

An electromechanical switching device includes a first electrode, comprising layers of a first 2D layered material, which layers exhibit a first surface; a second electrode, comprising layers of a second 2D layered material, which layers exhibit a second surface opposite the first surface; and an actuation mechanism; wherein each of the first and second 2D layered materials has an anisotropic electrical conductivity, which is lower transversely to its layers than in-plane with the layers; the first electrode includes two distinct areas alongside the first surface, which areas differ in at least one structural, electrical and/or magnetic property; and at least one of the first and second electrodes is actuatable by the actuation mechanism, such that actuation thereof for modification of an electrical conductance transverse to each of the first surface and the second surface to enable current modulation between the first electrode and the second electrode.

A variable resistor with a light emitting element includes a circuit board, a housing and a slide assembly. The circuit board extending in a longitudinal direction has a circuit arrangement surface to arrange thereon a resistive circuit and a power circuit. The housing fixed to the circuit board so as to form a slide space has a sliding slot extending in the longitudinal direction. The slide assembly further includes a slidable member, a fader set, a light emitting element, a resistive circuit brush and two light-emitting element brushes. The fader set fixed at the slidable member penetrates the sliding slot. The light emitting element in an accommodating groove of the slidable member projects a light beam toward the fader set. The resistive circuit brush electrically connects the resistive circuit. The two light-emitting element brushes electrically bridge the power circuit and the light emitting element.

A variable resistor with a light emitting element includes a circuit board, a housing and a slide assembly. The circuit board extending in a longitudinal direction has a circuit arrangement surface to arrange thereon a resistive circuit and a power circuit. The housing fixed to the circuit board so as to form a slide space has a sliding slot extending in the longitudinal direction. The slide assembly further includes a slidable member, a fader set, a light emitting element, a resistive circuit brush and two light-emitting element brushes. The fader set fixed at the slidable member penetrates the sliding slot. The light emitting element in an accommodating groove of the slidable member projects a light beam toward the fader set. The resistive circuit brush electrically connects the resistive circuit. The two light-emitting element brushes electrically bridge the power circuit and the light emitting element.