Abstract:
A first electrical response of a capacitor bank is accessed, the capacitor bank including a plurality of capacitor units arranged in a fixed spatial relationship with each other, each capacitor unit having a nominal impedance; a test electrical signal is provided to the capacitor bank; a second electrical response of the capacitor bank is measured after providing the test electrical signal to the capacitor bank; the first electrical response of the capacitor bank and the second response of the capacitor bank are compared; and whether an impedance of one or more capacitor units in the capacitor bank has changed relative to the nominal impedance is determined based on the comparison.
Abstract:
A light emitting diode (LED) light engine includes an LED circuit board including a light emitting circuit. The LED light engine also includes a driver circuit configured to drive a plurality of LEDs arranged in the light emitting circuit. The driver circuit does not include components with a magnetic field for the purpose of power conversion. An LED light engine including an outermost dimension of less than about one inch is also provided.
Abstract:
A system can comprise tabs and notches or a twist-and-lock mount for detachably mounting components adjacent a light emitting diode that is utilized for illumination, for example in a luminaire. Representative mounted components can include protective covers and optics for managing light emitted by the light emitting diode. The tabs and notches can be located rear of an aperture in a recessed lighting fixture or in a cover of a luminaire, for example. That cover, or another cover that may not utilize a releasable mount, can extend circumferentially about a periphery of a light emitting diode to cover and protect wiring for the light emitting diode and to hide the wiring from view by people occupying an illuminated space.
Abstract:
An electromagnetic actuator includes a housing and a bobbin positioned within the housing and secured relative thereto so as to be centered therein, the bobbin comprising a bobbin formed of a non-magnetic material. The electromagnetic actuator also includes a coil wound about the bobbin and a magnetic circuit comprising a plurality of actuator components positioned within the housing and on or adjacent to the bobbin. The actuator components include a permanent magnet that induces a magnetic flux flow through the magnetic circuit so as to generate a magnetic force, and an armature selectively movable within an opening formed through the bobbin responsive to the magnetic force and to current selectively provided to the coil. The bobbin locates and centers the components of the magnetic circuit about the central axis and provides a bearing surface for the armature as it moves within the opening formed through the bobbin.
Abstract:
The present invention provides for an improved network bus terminator (4), and related bus networks and bus network segments/trunks (1 ), and comprising a bus network terminator (4) including bus network termination functionality and a diagnostic analyser (2) and wherein the degree of diagnostic functionality provided within the terminator (4) can then, as with the terminator itself, be provided as an inherent feature of the segment/trunk (1 ), and thus also the bus network, and can comprise limited, simple but suitably effective diagnostic functionality, and which can be inherently suited to bus analysis during a commissioning, and/or initial deployment, phase and be provided in a cost-effective manner.
Abstract:
In one example, an illumination assembly includes a light fixture having a housing and at least one protrusion extending outward from the housing. The illumination assembly further includes a base having a corresponding at least one keyed opening. The at least one protrusion is configured to engage the corresponding at least one keyed opening to attach the light fixture to the base. In another example, an illumination assembly includes a light fixture having a housing and at least one ring protrusion extending outward from the housing. The illumination assembly further includes a base having a groove configured to receive a housing ring. The at least one ring protrusion is configured to contact the housing ring to attach the light fixture to the base.
Abstract:
A light fixture is provided with a heating element. The heating element can be a resistive heating element, such as a Nichrome wire, and resides in grooves of a cover (e.g., a glass globe) of the light fixture. Thus, the heating element acts to directly heat the cover of the light fixture to prevent, decrease, or otherwise correct frosting, freezing, and other elemental effects on the cover when it is exposed to the environment. The heating element is capable of raising the temperature of the cover at least 15°C from an initial temperature of -20°C in 30 minutes. A heat sensing element may provide feedback regarding the temperature of the cover for controlling power supplied to the heating element.
Abstract:
An enclosure for an electrical apparatus includes a tank having a bank of corrugate affixed to one or more walls thereof, with the bank of corrugate including a plurality of cooling fins in fluid communication with a volume of the tank via a plurality of openings formed in the walls, such that cooling fluid can flow into the cooling fins. A cross member is affixed to the bank of corrugate along each of a top surface and a bottom surface thereof and extends along a length of the corrugate at a distal end of the cooling fins. Vibration stabilizers are provided to control vibrations in the corrugate bank, with the vibration stabilizer having a gusset plate joined to the cross member and extending between a pair of adjacent cooling fins and stabilizer with a first end attached to the tank and a second end attached to the gusset plate.
Abstract:
A switching apparatus (4) is structured to be electrically connected with a circuit and includes a housing (8) and a switch assembly (12). The switch assembly includes a toggle switch (28), a slider switch (30), and a toggle housing (32), with the toggle housing including at least a first wall (36) having an abutment (56) and a ledge (58), and with the ledge being situated relatively closer to the housing than the abutment. The slider switch includes a slider element (52) that is situated at a location spaced from the housing and disposed generally between the abutment and the ledge. The abutment is structured to resist unintended engagement of the slider element when the toggle switch is being moved between a first orientation and a second orientation.
Abstract:
A system and method for testing of electrical connections, conductors, and loads prior to energizing those connections is disclosed. For example, an interlocking socket can comprise a receptacle designed to be coupled to a connector of a load. The interlocking socket can comprise a microprocessor coupled to the receptacle, the microcontroller operable for testing one or more faults in the connector, a conductor, or the load coupled to the connector. In another example, a microprocessor can be coupled to a switch comprising a conductor, where the microprocessor is operable for testing one or more faults in the conductor or a load coupled to the conductor.