Abstract: A pre-charging circuit for charging a DC-link capacitor is provided. The pre-charging circuit may include a first semiconductor switch to be coupled to a first terminal of a high voltage source, a first inductor to be coupled to the first semiconductor switch and a first terminal of a capacitor, a second semiconductor switch to be coupled to a second terminal of the high voltage source, a second inductor to be coupled to the second semiconductor switch and a second terminal of the capacitor, and a diode coupled to the first semiconductor switch, the second semiconductor switch, the first inductor, and the second inductor, and coupled in parallel with the capacitor.

Abstract: An electro-optical observation device includes a device housing, a lens group arranged in the device housing, and a display unit arranged in the device housing and being configured to display a captured image or overlay information on a beam path. Moreover, the observation device includes an eyepiece arranged on an exit side with respect to the display unit and including at least one electrically conductive element, and a control device. The control device is in contact with the electrically conductive element and configured to form a capacitive proximity sensor with the electrically conductive element and control the display unit based on a measured quantity ascertained with the capacitive proximity sensor.

Abstract: A power converter is provided that includes a power inverter, a rectifier circuit and an isolation transformer circuit. The power inverter is to convert a direct current (DC) input to an alternating current (AC) output, the power inverter including N bridge circuits connected in parallel, where N>1. The rectifier circuit is to convert the AC output to a DC output, the rectifier circuit including N+1 series diode pairs connected in parallel. The isolation transformer circuit is coupled to and between the power inverter and the rectifier circuit to transfer the AC output from the power inverter to the rectifier circuit, the isolation transformer circuit including N transformers. Respective ones of the N transformers are coupled to one of the N bridge circuits and two of the N+1 series diode pairs.

Abstract: A waste disposal system (30) with a waste receiver (32) for receiving pharmaceutical waste material. A locking assembly (34) is secured to a fixed surface and actuated from a locked configuration to an unlocked configuration. A lock cylinder of the locking assembly may extend forward of a front wall (44) of a receiver body (36) of the waste receiver to engage a locking feature of a cover (82) in the locked configuration. A cover retention feature (124) may prevent axial decoupling of the cover from the receiver body. The receiver body may be formed from two shells (62,64). A reaction agent (150) is positioned within the container volume and spaced apart from a bottom wall of the receiver body. The reaction agent may be positioned within the container volume between the lock passageway (94) and/or a solid receiver volume, and opposing sidewalls of the receiver body. A support may maintain the position of the reaction agent within the container volume.

Abstract: A waste disposal system for receiving pharmaceutical waste material including at least one of a solid phase pharmaceutical waste material and a liquid phase pharmaceutical waste material is provided. The waste receiver includes a receiver body defining an opening. The waster receiver further includes an inner surface defining a container volume in fluid communication with the opening, and an outer surface opposite the inner surface. The outer surface defines a lock passageway separate from the opening. The system further includes a bracket adapted to be secured to a fixed surface and a locking assembly coupled to the bracket and adapted to releasably secure the waste receiver to the fixed surface. The locking assembly includes a lock housing sized to be removably positioned at least partially within the lock passageway.

Abstract: A waste receiver for receiving pharmaceutical waste material and adapted to be releasably secured to a fixed surface is disclosed. The waste receiver comprises a receiver body with a fluid absorber and a chemical composition disposed within the receiver body. The receiver body defines an opening for receiving the pharmaceutical waste material and comprises an inner surface defining a container volume in fluid communication with the opening, and an outer surface opposite the inner surface with the outer surface defining a lock passageway through the receiver body and a keyway comprising a portion of the lock passageway. The lock passageway is adapted to receive a locking assembly and the keyway is adapted to receive an engagement feature of the locking assembly to releasably secure the waste receiver to the locking assembly in a single orientation. The waste receiver also comprises a cover adapted to be coupled with the receiver body.

Abstract: A fan assembly designed for quick assembly and disassembly can include a housing, a fan and a motor disposed within the housing, a first guard located on a first side and a second guard located on a second side of the housing. The fan assembly can include a tensioner mechanism provided on an exterior of the housing to secure the first and the second guards to the housing. The fan assembly can be assembled by securing a plurality of struts to an interior side of a housing, mounting a fan and motor to the plurality of struts, inserting first and second guards within the housing proximate the inlet and outlet ends, and tensioning the first and second free ends of the housing to secure the first and second guards within the housing.

Abstract: A waste receiver for receiving pharmaceutical waste material and adapted to be releasably secured to a fixed surface is disclosed. The waste receiver comprises a receiver body with a fluid absorber and a chemical composition disposed within the receiver body. The receiver body defines an opening for receiving the pharmaceutical waste material and comprises an inner surface defining a container volume in fluid communication with the opening, and an outer surface opposite the inner surface with the outer surface defining a lock passageway through the receiver body and a keyway comprising a portion of the lock passageway. The lock passageway is adapted to receive a locking assembly and the keyway is adapted to receive an engagement feature of the locking assembly to releasably secure the waste receiver to the locking assembly in a single orientation. The waste receiver also comprises a cover adapted to be coupled with the receiver body.

Abstract: A waste disposal system with a waste receiver for receiving pharmaceutical waste material. A locking assembly is secured to a fixed surface and actuated from a locked configuration to an unlocked configuration. A lock cylinder of the locking assembly may extend forward of a front wall of a receiver body of the waste receiver to engage a locking feature of the cover in the locked configuration. A cover retention feature may prevent axial decoupling of the cover from the receiver body. An engagement feature is moved to be disengaged from the receiver body, and the receiver body is moved away from the fixed surface to disengage the locking assembly from the cover. The cover is decoupled from the cover retention feature, and coupled with the receiver body to seal the pharmaceutical waste material. The locking assembly may be removed from a lock passageway for disposal of the waste receiver.

Abstract: A waste disposal system (30) with a waste receiver (32) for receiving pharmaceutical waste material. A locking assembly (34) is secured to a fixed surface and actuated from a locked configuration to an unlocked configuration. A lock cylinder of the locking assembly may extend forward of a front wall (44) of a receiver body (36) of the waste receiver to engage a locking feature of a cover (82) in the locked configuration. A cover retention feature (124) may prevent axial decoupling of the cover from the receiver body. The receiver body may be formed from two shells (62,64). A reaction agent (150) is positioned within the container volume and spaced apart from a bottom wall of the receiver body. The reaction agent may be positioned within the container volume between the lock passageway (94) and/or a solid receiver volume, and opposing sidewalls of the receiver body. A support may maintain the position of the reaction agent within the container volume.

Abstract: A fan assembly designed for quick assembly and disassembly can include a housing, a fan and a motor disposed within the housing, a first guard located on a first side and a second guard located on a second side of the housing. The fan assembly can include a tensioner mechanism provided on an exterior of the housing to secure the first and the second guards to the housing. The fan assembly can be assembled by securing a plurality of struts to an interior side of a housing, mounting a fan and motor to the plurality of struts, inserting first and second guards within the housing proximate the inlet and outlet ends, and tensioning the first and second free ends of the housing to secure the first and second guards within the housing.

Abstract: An underwater body having a movable component which can be moved into a retracted position and, as a result, increases the volume of the underwater body. In addition, a method is disclosed for operating such an underwater body. An expansion means conducts a fluid into a hollow space. The hollow space is operatively connected to the movable component. When the fluid is conducted into the hollow space, the movable component is moved into the extended position relative to the shell of the underwater body. The fluid in the hollow space hardens. The hardened fluid in the hollow space holds the movable component in the extended position.

Abstract: An underwater vehicle may include a first propulsion element disposed on a first swivel holder, a first drive motor that is able to drive the first propulsion element, and a swivel mechanism that is able to move the first swivel holder relative to an outer hull of the underwater vehicle from a swiveled-in position into a swiveled-out position. The underwater vehicle can detect a given event automatically under water. In response to the detection of the event, the underwater vehicle may activate the swivel mechanism. The activated swivel mechanism may then move the first swivel holder into the swiveled-out position.

Abstract: A waste disposal system with a waste receiver for receiving pharmaceutical waste material. A locking assembly is secured to a fixed surface and actuated from a locked configuration to an unlocked configuration. A lock cylinder of the locking assembly may extend forward of a front wall of a receiver body of the waste receiver to engage a locking feature of the cover in the locked configuration. A cover retention feature may prevent axial decoupling of the cover from the receiver body. An engagement feature is moved to be disengaged from the receiver body, and the receiver body is moved away from the fixed surface to disengage the locking assembly from the cover. The cover is decoupled from the cover retention feature, and coupled with the receiver body to seal the pharmaceutical waste material. The locking assembly may be removed from a lock passageway for disposal of the waste receiver.

Abstract: A waste disposal system with a waste receiver for receiving pharmaceutical waste material. A locking assembly is secured to a fixed surface and actuated from a locked configuration to an unlocked configuration. A lock cylinder of the locking assembly may extend forward of a front wall of a receiver body of the waste receiver to engage a locking feature of the cover in the locked configuration. A cover retention feature may prevent axial decoupling of the cover from the receiver body. An engagement feature is moved to be disengaged from the receiver body, and the receiver body is moved away from the fixed surface to disengage the locking assembly from the cover. The cover is decoupled from the cover retention feature, and coupled with the receiver body to seal the pharmaceutical waste material. The locking assembly may be removed from a lock passageway for disposal of the waste receiver.

Abstract: An underwater vehicle may include a first propulsion element disposed on a first swivel holder, a first drive motor that is able to drive the first propulsion element, and a swivel mechanism that is able to move the first swivel holder relative to an outer hull of the underwater vehicle from a swiveled-in position into a swiveled-out position. The underwater vehicle can detect a given event automatically under water. In response to the detection of the event, the underwater vehicle may activate the swivel mechanism. The activated swivel mechanism may then move the first swivel holder into the swiveled-out position.

Abstract: An underwater body having a movable component which can be moved into a retracted position and, as a result, increases the volume of the underwater body. In addition, a method is disclosed for operating such an underwater body. An expansion means conducts a fluid into a hollow space. The hollow space is operatively connected to the movable component. When the fluid is conducted into the hollow space, the movable component is moved into the extended position relative to the shell of the underwater body. The fluid in the hollow space hardens. The hardened fluid in the hollow space holds the movable component in the extended position.

Abstract: A waste disposal system with a waste receiver for receiving pharmaceutical waste material. A locking assembly is secured to a fixed surface and actuated from a locked configuration to an unlocked configuration. A lock cylinder of the locking assembly may extend forward of a front wall of a receiver body of the waste receiver to engage a locking feature of the cover in the locked configuration. A cover retention feature may prevent axial decoupling of the cover from the receiver body. An engagement feature is moved to be disengaged from the receiver body, and the receiver body is moved away from the fixed surface to disengage the locking assembly from the cover. The cover is decoupled from the cover retention feature, and coupled with the receiver body to seal the pharmaceutical waste material. The locking assembly may be removed from a lock passageway for disposal of the waste receiver.