Abstract:
A speaker assembly including a first speaker comprising a first diaphragm and a first voice coil movably coupled to a first magnet assembly, wherein the first diaphragm faces a first direction, the first voice coil moves along a first axis in the first direction when driven by an audio signal and the first magnet assembly is coupled to a fixed structure by a first compliant mounting member; and a second speaker laterally offset from the first speaker and including a second diaphragm and a second voice coil movably coupled to a second magnet assembly, wherein the second diaphragm faces a second direction different from the first direction, the second voice coil moves along a second axis in the second direction when driven by an audio signal and the second magnet assembly is coupled to the fixed structure by a second compliant mounting member.
Abstract:
A Non-Uniform Dielectric Layer, Multi-Layer-Ceramic-Capacitor (MLCC) has upper and lower dielectric layers separating upper and lower electrode layers, where the lower dielectric layers have a greater vertical thickness than the upper dielectric layers to reduce piezoelectric effect driven capacitor reaction forces on a printed circuit board (PCB) on which the capacitor is mounted. Such an MLCC may include an upper set of dielectric layers that separate adjacent pairs of upper electrode layers in a top portion of the MLCC, and a lower set of dielectric layers that separate adjacent pairs of lower electrode layers in a bottom portion of the MLCC. A bottom portion of the MLCC may be mounted on a PCB. The thickness of the lower dielectric layers may be between 1.5 and 3.5 times greater than the upper dielectric layers to reduce piezoelectric effect driven capacitor reaction forces in the audio range of human hearing.
Abstract:
An electronic speaker can include: a device housing that defines an interior housing cavity; an audio driver disposed within the interior housing cavity; and a foot assembly coupled to the device housing and operable to support the electronic speaker. The foot assembly can include: a foot assembly sidewall having an outer sidewall perimeter extending outwardly away from a central neck; a planar foot having an outer foot perimeter proximate the outer sidewall perimeter where an upper surface of the planar foot cooperates with an interior surface of the foot assembly sidewall to create an internal cavity within the foot assembly; a suspension system disposed within the foot assembly internal cavity and coupling the planar foot to the foot assembly sidewall. The suspension system can include: an isolator plate disposed within the internal cavity of the foot assembly and mechanically coupled to the planar foot where the isolator plate includes a channel projecting perpendicularly away from the planar foot towards the device housing; an isolator stop fitted within the channel and having an aperture formed through the isolator stop aligned with a length of the channel; and an isolator fastener coupled to the foot assembly sidewall and disposed within the channel. The isolator fastener can extend through the isolator aperture formed through the isolator stop and can be operable to allow the foot assembly sidewall to translate with respect to the planar foot.
Abstract:
The described embodiments relate generally to printed circuit boards (PCBs) including a capacitor and more specifically to designs for mechanically isolating the capacitor from the PCB to reduce an acoustic noise produced when the capacitor imparts a piezoelectric force on the PCB. Conductive features can be mechanically and electrically coupled to electrodes located on two ends of the capacitor. The conductive features can be placed in corners where the amplitude of vibrations created by the piezoelectric forces is relatively small. The conductive features can then be soldered to a land pattern on the PCB to form a mechanical and electrical connection while reducing an amount of vibrational energy transferred from the capacitor to the PCB.
Abstract:
A Non-Uniform Dielectric Layer, Multi-Layer-Ceramic-Capacitor (MLCC) has upper and lower dielectric layers separating upper and lower electrode layers, where the lower dielectric layers have a greater vertical thickness than the upper dielectric layers to reduce piezoelectric effect driven capacitor reaction forces on a printed circuit board (PCB) on which the capacitor is mounted. Such an MLCC may include an upper set of dielectric layers that separate adjacent pairs of upper electrode layers in a top portion of the MLCC, and a lower set of dielectric layers that separate adjacent pairs of lower electrode layers in a bottom portion of the MLCC. A bottom portion of the MLCC may be mounted on a PCB. The thickness of the lower dielectric layers may be between 1.5 and 3.5 times greater than the upper dielectric layers to reduce piezoelectric effect driven capacitor reaction forces in the audio range of human hearing.
Abstract:
A haptic actuator may include a housing, at least one coil carried by the housing, and a field member having opposing first and second sides. The haptic actuator may also include a respective flexure bearing mounting each of the first and second sides of the field member to be reciprocally movable within the housing responsive to the at least one coil. At least one of the flexure bearings may include an arm and a damper body attached thereto.
Abstract:
A multi-layer capacitor such as a multi-layer-ceramic-capacitor (MLCC) has upper and lower dielectric layers separating upper and lower electrode layers, where the lower dielectric layers have a lower dielectric constant than the upper dielectric layers to reduce piezoelectric effect driven capacitor reaction forces on a printed circuit board (PCB) on which the capacitor is mounted. Such an MLCC may include the upper dielectric and electrode layers in a top portion of the MLCC; and the lower dielectric and electrode layers in a bottom portion of the MLCC. A bottom portion of the MLCC may be mounted on a PCB. As an example, the dielectric constant value of the lower dielectric layers may be between 1.5 and 3.5 times less than that of the upper dielectric layers to reduce piezoelectric effect driven capacitor reaction forces in the audio range of human hearing. Other embodiments are also described and claimed.