A vibration actuator includes: a movable element having a magnet that is supported to be rotatable around a shaft, a weight supported to be rotatable together with the magnet, and an elastic supporting member wherein a rotation of the magnet and the weight is supported elastically; a coil that is supplied with an AC current at a frequency that is equal to a resonant frequency of the movable element; and a magnetic pole member that causes the movable element to undergo reciprocating a rotational vibration around the shaft through applying rotational torques in different directions alternatingly to the magnet by changing magnetic poles through the AC current that is applied to the coil.

A vibration actuator includes: a movable element having a magnet that is supported to be rotatable around a shaft, a weight supported to be rotatable together with the magnet, and an elastic supporting member wherein a rotation of the magnet and the weight is supported elastically; a coil that is supplied with an AC current at a frequency that is equal to a resonant frequency of the movable element; and a magnetic pole member that causes the movable element to undergo reciprocating a rotational vibration around the shaft through applying rotational torques in different directions alternatingly to the magnet by changing magnetic poles through the AC current that is applied to the coil.

Disclosed is an electromagnetic vibratory pump, comprising a first C-shaped winding and a first magnet. The first C-shaped winding comprises a first coil and a first electromagnetizable member. The first coil covers the first electromagnetizable member, which comprises a first main body, a first leg and a second leg. The legs are connected to the first main body, and the distance between the legs is reduced from a first width to a second width from the first main body. The first magnet swings in a circular tangential direction. A point of tangency of the circular tangential direction is configured apart from the first leg and the second leg respectively by a first minimum distance. The first minimum distance is less than a half of the second width. The first magnet is driven by the first magnetic line of force to move in the first circular tangential direction, and the first magnet is driven by the second magnetic line of force to move in the second circular tangential direction.

Disclosed is an electromagnetic vibratory pump, comprising a first C-shaped winding and a first magnet. The first C-shaped winding comprises a first coil and a first electromagnetizable member. The first coil covers the first electromagnetizable member, which comprises a first main body, a first leg and a second leg. The legs are connected to the first main body, and the distance between the legs is reduced from a first width to a second width from the first main body. The first magnet swings in a circular tangential direction. A point of tangency of the circular tangential direction is configured apart from the first leg and the second leg respectively by a first minimum distance. The first minimum distance is less than a half of the second width. The first magnet is driven by the first magnetic line of force to move in the first circular tangential direction, and the first magnet is driven by the second magnetic line of force to move in the second circular tangential direction.

Various embodiments relate to a hybrid electromechanical transformer system and related methods. One such system comprises an electromechanical transformer device comprising an oscillating suspension element, wherein the oscillating suspension element comprises a platform and one or more suspension arms. The one or more suspension arms are attached to a respective side of the platform, wherein the oscillating suspension element further comprises a frame. The device further comprises at least one piezoelectric element attached to the one or more suspension arms of the oscillating suspension element of the oscillating suspension element: a piezoelectric transducer port coupled to the at least one piezoelectric element: a permanent magnet attached to the platform of the oscillating suspension element; a coil electrodynamically coupled with the permanent magnet and attached to the frame of the oscillating suspension element; and an electrodynamic transducer port coupled to the coil.

Various embodiments relate to a hybrid electromechanical transformer system and related methods. One such system comprises an electromechanical transformer device comprising an oscillating suspension element, wherein the oscillating suspension element comprises a platform and one or more suspension arms. The one or more suspension arms are attached to a respective side of the platform, wherein the oscillating suspension element further comprises a frame. The device further comprises at least one piezoelectric element attached to the one or more suspension arms of the oscillating suspension element of the oscillating suspension element: a piezoelectric transducer port coupled to the at least one piezoelectric element: a permanent magnet attached to the platform of the oscillating suspension element; a coil electrodynamically coupled with the permanent magnet and attached to the frame of the oscillating suspension element; and an electrodynamic transducer port coupled to the coil.

An example variable reluctance device includes a load structure connected to an armature through a connecting arm. The armature is positioned between two oppositely oriented core structures. A structural frame secures the core structures in a fixed position, forming gap regions between the core structures and the armature, forming a magnetic circuit. The armature is resiliently centered between the core structures by a spring, such that the gaps and are approximately equal in width when the armature is at rest. The device further includes a magnetic substance within the gaps that is compressed or stretched to allow movement of the armature.

A coil assembly for an electromagnetic actuator or motor, includes a magnetic core including at least one pair of slots; a coil, at least partly mounted inside the at least one pair of slots; and a cooling member, the cooling member being mounted to a surface of the coil.

A coil assembly for an electromagnetic actuator or motor, includes a magnetic core including at least one pair of slots; a coil, at least partly mounted inside the at least one pair of slots; and a cooling member, the cooling member being mounted to a surface of the coil.

An actuator includes a solenoid including a coil and a plunger, a switch circuit coupled to the coil, and a control circuit coupled to the switch circuit. The control circuit is configured to receive a feedback signal representative of a plunger position. The control circuit is also configured to provide power to the solenoid via the switch circuit and reduce power to the solenoid via the switch circuit in response to the feedback signal being representative of the plunger being in a full travel position.