A method of fabricating a magnetoresistive device may comprise forming an electrically conductive region and forming a first seed region on one side of the electrically conductive region. A surface of the first seed region may be treated by exposing the surface to a gas. A second seed region may be formed on the treated surface of the first seed region. The method may also comprise forming a magnetically fixed region on one side of the second seed region.

An apparatus for controlling a degradation rate of an artificial bone in vitro, a degradation method, and an artificial bone are disclosed. The apparatus includes: a variable resistor; and a wearable component, comprising: a metal wire electrically connected in series with the variable resistor and configured to generate an alternating magnetic field; and an insulating textile layer by which the outside of the metal wire is covered.

An anomaly detection device detects an anomaly of a potentiometer including a resistor and a movable terminal that moves while contacting the resistor. The anomaly detection device includes a first applier that applies, to one end of the resistor, a first voltage in a first detection period and a second voltage in a second detection period that is consecutive to the first detection period; a second applier that applies, to another end of the resistor, the first voltage in the first detection period and the second voltage in the second detection period; a voltage detector that detects an output voltage from the movable terminal; and an anomaly detector that detects a contact failure of the movable terminal based on the output voltage detected by the voltage detector when an applied voltage applied by each of the first applier and the second applier is changed.

A control knob assembly includes a rotating shaft coupled with a controllable device. A base is fixed to a mounting surface where the rotating shaft extends therethrough. A fork includes a detent and a tab. The fork is positioned on top of the base and slidably engaged therewith. A gear includes teeth configured to receive the detent and an upper groove. The gear is positioned on top of the fork with the rotating shaft extending therethrough. A knob includes a cavity that is fixedly engaged to the rotating shaft above the base, fork and gear, with the tab extending radially outwardly from underneath the knob. A biasing member is secured to the knob and is configured to engage the gear upper groove such that when engaged the gear rotates with the knob. A set position is established and repositioned by engaging the tab.

A control knob assembly includes a rotating shaft coupled with a controllable device. A base is fixed to a mounting surface where the rotating shaft extends therethrough. A fork includes a detent and a tab. The fork is positioned on top of the base and slidably engaged therewith. A gear includes teeth configured to receive the detent and an upper groove. The gear is positioned on top of the fork with the rotating shaft extending therethrough. A knob includes a cavity that is fixedly engaged to the rotating shaft above the base, fork and gear, with the tab extending radially outwardly from underneath the knob. A biasing member is secured to the knob and is configured to engage the gear upper groove such that when engaged the gear rotates with the knob. A set position is established and repositioned by engaging the tab.

A process for improving the performance of the sliding rheostat of 5G communication high-frequency signal board with the sliding rheostat slides along between two bonding pads, includes the following steps: outer layer etching; resin plugging: a. plugging the resinous ink into the pre-plugging position; b: baking, baking on the baking plate of the oven after the plugging is finished; board polishing: using a ceramic brush to process the plugged board, then using a non-woven fabric blush to polish the surface that is polished by ceramic brush. The present invention provides a process for improving the performance of the sliding rheostat of 5G communication high-frequency signal board. The resin plugging method is used to plug the gap between the conductors of the sliding rheostat, so as to prevent the sliding rheostat from being unable to slide due to the altitude difference between conductors of the high-frequency signal board.

An anomaly detection device detects an anomaly of a potentiometer including a resistor and a movable terminal that moves while contacting the resistor. The anomaly detection device includes a first applier that applies, to one end of the resistor, a first voltage in a first detection period and a second voltage in a second detection period that is consecutive to the first detection period; a second applier that applies, to another end of the resistor, the first voltage in the first detection period and the second voltage in the second detection period; a voltage detector that detects an output voltage from the movable terminal; and an anomaly detector that detects a contact failure of the movable terminal based on the output voltage detected by the voltage detector when an applied voltage applied by each of the first applier and the second applier is changed.

An apparatus for controlling a degradation rate of an artificial bone in vitro, a degradation method, and an artificial bone are disclosed. The apparatus includes: a variable resistor; and a wearable component, comprising: a metal wire electrically connected in series with the variable resistor and configured to generate an alternating magnetic field; and an insulating textile layer by which the outside of the metal wire is covered.

A system for controlling a flow rate through an HVAC component is provided. The system includes a controller communicably coupled with a potentiometer and an actuator configured to drive the HVAC component between multiple positions to affect the flow rate. The controller configured to determine an actuator position setpoint based on a flow rate setpoint, drive the actuator to the actuator position setpoint using a calculated travel period, and set a current actuator position based on a voltage signal received from the potentiometer upon stopping the actuator at an expiration of the calculated travel period.

An electromagnetic induction potentiometer includes a housing, a rotor, a permanent magnet, and a magnetic induction module. The housing defines a first cavity and a second cavity. The rotor is accommodated in the first cavity. The rotor is rotatable relative to the housing. The magnetic induction module is accommodated in the second cavity. The rotor includes a through hole and fasteners. The through hole is configured to receive an external rotation input. The fasteners are configured to fix the permanent magnet on the rotor. Through arrangements of the fasteners, the permanent magnet is firmly installed on the rotor, preventing the permanent magnet from falling off the rotor when the electromagnetic induction potentiometer is in a work state, improving working stability of the electromagnetic induction potentiometer, and making the permanent magnet easy to disassemble and assemble during production ad testing processes of the electromagnetic induction potentiometer.