Abstract: An HVAC actuator configured to actuate an HVAC component may include a rotatable output shaft having a range of rotation between a first end position and a second end position, a drive mechanism configured to selectively drive the output shaft, and a housing for housing the drive mechanism. The HVAC actuator may include a position indicator viewable from a front side of the housing that moves as the output shaft is rotated such that the position indicator indicates a current position of the output shaft. The position indicator may include an indicator wheel that is directly coupled to the output shaft of the HVAC actuator and may rotate with the output shaft. The indicator wheel may have one or more markings that move with the indicator wheel. The one or more markings may include a line extending in a radial direction from a rotation axis of the indicator wheel.

Abstract: An HVAC actuator configured to actuate an HVAC component may include a rotatable output shaft having a full range of rotation between a first end position and a second end position, a drive mechanism configured to selectively drive the output shaft, and a housing having a front side that faces away from the HVAC component. The HVAC actuator may include a range adjustment lever manipulatable from the front side of the housing that allows a user to selectively limit rotation of the output shaft to a reduced range that is a subset of the full range. In some instances, the range adjustment lever allows the user to select between two or more predetermined reduced ranges. The two or more predetermined reduced ranges may each include the first end position but have a different second stop position, or include the second end position but have a different first stop position.

Abstract: An HVAC actuator coupleable to an HVAC component is disposed in or at an insulated duct. The HVAC actuator may include a housing and a taping flange. The taping flange may be spaced from the outer surface of the duct and adjacent to an outer surface of an insulated layer of the duct when the HVAC actuator is coupled to the HVAC component, and may be configured to facilitate taping of the HVAC actuator to the outer surface of the insulating layer. It may be shaped to provide a front-facing surface that is suitable for receiving tape to provide a seal between the taping flange and the outer surface of the insulating layer. In some cases, the taping flange may extend outward from the housing around the entire perimeter of the housing. The taping flange may be formed integrally with the housing, or it formed separately and coupled to the housing.

Abstract: An HVAC actuator configured to actuate an HVAC component may include a rotatable output shaft having a full range of rotation between a first end position and a second end position, a drive mechanism configured to selectively drive the output shaft, and a housing having a front side that faces away from the HVAC component. The HVAC actuator may include a range adjustment lever manipulatable from the front side of the housing that allows a user to selectively limit rotation of the output shaft to a reduced range that is a subset of the full range. In some instances, the range adjustment lever allows the user to select between two or more predetermined reduced ranges. The two or more predetermined reduced ranges may each include the first end position but have a different second stop position, or include the second end position but have a different first stop position.

Abstract: An HVAC actuator configured to actuate an HVAC component may include a rotatable output shaft having a full range of rotation between a first end position and a second end position, a drive mechanism configured to selectively drive the output shaft, and a housing having a front side that faces away from the HVAC component. The HVAC actuator may include a range adjustment lever manipulatable from the front side of the housing that allows a user to selectively limit rotation of the output shaft to a reduced range that is a subset of the full range. In some instances, the range adjustment lever allows the user to select between two or more predetermined reduced ranges. The two or more predetermined reduced ranges may each include the first end position but have a different second stop position, or include the second end position but have a different first stop position.

Abstract: An HVAC actuator coupleable to an HVAC component is disposed in or at an insulated duct. The HVAC actuator may include a housing and a taping flange. The taping flange may be spaced from the outer surface of the duct and adjacent to an outer surface of an insulated layer of the duct when the HVAC actuator is coupled to the HVAC component, and may be configured to facilitate taping of the HVAC actuator to the outer surface of the insulating layer. It may be shaped to provide a front-facing surface that is suitable for receiving tape to provide a seal between the taping flange and the outer surface of the insulating layer. In some cases, the taping flange may extend outward from the housing around the entire perimeter of the housing. The taping flange may be formed integrally with the housing, or it formed separately and coupled to the housing.

Abstract: An HVAC actuator coupleable to an HVAC component is disposed in or at an insulated duct. The HVAC actuator may include a housing and a taping flange. The taping flange may be spaced from the outer surface of the duct and adjacent to an outer surface of an insulated layer of the duct when the HVAC actuator is coupled to the HVAC component, and may be configured to facilitate taping of the HVAC actuator to the outer surface of the insulating layer. It may be shaped to provide a front-facing surface that is suitable for receiving tape to provide a seal between the taping flange and the outer surface of the insulating layer. In some cases, the taping flange may extend outward from the housing around the entire perimeter of the housing. The taping flange may be formed integrally with the housing, or it formed separately and coupled to the housing.

Abstract: An HVAC actuator may include a rotatable output shaft, a drive mechanism configured to selectively drive the output shaft, two or more wiring terminals, and a removable blocking tab configured to block wire attachment to at least one of the two or more wiring terminals. When the removable tab is removed, wire attachment to the previously blocked at least one wire terminals may no longer blocked. The removable block tab may be a break-away tab. The HVAC actuator may include a housing enclosing the drive mechanism, and the break-away tab may be integral to the housing. In some instances, the removable tab, once removed, is not configured to be reattached, but this is not required.

Abstract: An HVAC actuator includes an output shaft rotatable between first and second end positions and a drive mechanism to selectively drive the output shaft toward the first end position. The actuator may include a light source within its housing and a window to provide visibility of the light from the light source to an observer. An aperture member may be situated between the light source and the window and be configured to move as the output shaft is rotated. The aperture member may have spaced openings that transmit the light to the window at a plurality of positions of the output shaft such that the aperture member may cause the appearance of blinking of the light through the window as the output shaft is rotated toward the first end position. One of the openings may be configured to be in registration with the light source at the first end position.

Abstract: A method of reducing power consumption in a computing platform is disclosed. An endpoint-device that is coupled to the computing platform includes a first data buffer and a second data buffer. The first data buffer buffers outgoing data to be transmitted to an external device via a first communications medium. The second data buffer buffers incoming data received from the external device via the first communications medium. At least one of the first or second data buffers may selectively communicate with the computing platform, via a second communications medium, during an active window of the other data buffer. The active window may be requested by the first and/or second data buffers based, at least in part, on a system idle signal. For some embodiments, the first communications medium is an Ethernet link. Further, for some embodiments, the second communications medium is a Peripheral Component Interconnect Express (PCIe) link.

Abstract: An HVAC actuator coupleable to an HVAC component is disposed in or at an insulated duct. The HVAC actuator may include a housing and a taping flange. The taping flange may be spaced from the outer surface of the duct and adjacent to an outer surface of an insulated layer of the duct when the HVAC actuator is coupled to the HVAC component, and may be configured to facilitate taping of the HVAC actuator to the outer surface of the insulating layer. It may be shaped to provide a front-facing surface that is suitable for receiving tape to provide a seal between the taping flange and the outer surface of the insulating layer. In some cases, the taping flange may extend outward from the housing around the entire perimeter of the housing. The taping flange may be formed integrally with the housing, or it formed separately and coupled to the housing.

Abstract: An HVAC actuator configured to actuate an HVAC component may include a rotatable output shaft having a full range of rotation between a first end position and a second end position, a drive mechanism configured to selectively drive the output shaft, and a housing having a front side that faces away from the HVAC component. The HVAC actuator may include a range adjustment lever manipulatable from the front side of the housing that allows a user to selectively limit rotation of the output shaft to a reduced range that is a subset of the full range. In some instances, the range adjustment lever allows the user to select between two or more predetermined reduced ranges. The two or more predetermined reduced ranges may each include the first end position but have a different second stop position, or include the second end position but have a different first stop position.

Abstract: An HVAC actuator may include a rotatable output shaft, a drive mechanism configured to selectively drive the output shaft, two or more wiring terminals, and a removable blocking tab configured to block wire attachment to at least one of the two or more wiring terminals. When the removable tab is removed, wire attachment to the previously blocked at least one wire terminals may no longer blocked. The removable block tab may be a break-away tab. The HVAC actuator may include a housing enclosing the drive mechanism, and the break-away tab may be integral to the housing. In some instances, the removable tab, once removed, is not configured to be reattached, but this is not required.

Abstract: An HVAC actuator includes an output shaft rotatable between first and second end positions and a drive mechanism to selectively drive the output shaft toward the first end position. The actuator may include a light source within its housing and a window to provide visibility of the light from the light source to an observer. An aperture member may be situated between the light source and the window and be configured to move as the output shaft is rotated. The aperture member may have spaced openings that transmit the light to the window at a plurality of positions of the output shaft such that the aperture member may cause the appearance of blinking of the light through the window as the output shaft is rotated toward the first end position. One of the openings may be configured to be in registration with the light source at the first end position.

Abstract: An HVAC actuator configured to actuate an HVAC component may include a rotatable output shaft having a range of rotation between a first end position and a second end position, a drive mechanism configured to selectively drive the output shaft, and a housing for housing the drive mechanism. The HVAC actuator may include a position indicator viewable from a front side of the housing that moves as the output shaft is rotated such that the position indicator indicates a current position of the output shaft. The position indicator may include an indicator wheel that is directly coupled to the output shaft of the HVAC actuator and may rotate with the output shaft. The indicator wheel may have one or more markings that move with the indicator wheel. The one or more markings may include a line extending in a radial direction from a rotation axis of the indicator wheel.