Abstract:
Aspects of manual multi-phase voltage control are described. In one embodiment, a voltage regulator controller includes switches for coupling power from an energized phase to a de-energized phase. For example, the voltage regulator controller may include a first power switch electrically coupled to drive circuitry of a first voltage regulator, a first phase output voltage of a multi-phase power delivery system, and a second phase output voltage of the multi-phase power delivery system. In certain aspects, the first power switch selectively toggles an electrical coupling between the drive circuitry of the first voltage regulator and one of the first phase output voltage and the second phase output voltage. Powering a voltage regulator of a de-energized phase with power from an energized phase may peg the operation of the voltage regulator, as necessary, to maintain the balance of the power distribution system, for example.
Abstract:
A universal-voltage discrete input circuit uses a high voltage depletion-mode field effect transistor in combination with a low-voltage, adjustable precision shunt regulator and an isolation circuit for interfacing a low voltage digital logic circuit to a switched external voltage ranging from about 7 volts to about 1000 volts AC or +/− DC, at a low fixed current. In addition to the wide input voltage range accepted at a uniform low current value, very high voltage isolation is provided between the external voltage and the low voltage digital logic circuit, and elimination of ground loops and common mode noise.
Abstract:
A universal-voltage discrete input circuit uses a high voltage depletion-mode field effect transistor in combination with a low-voltage, adjustable precision shunt regulator and an isolation circuit for interfacing a low voltage digital logic circuit to a switched external voltage ranging from about 7 volts to about 1000 volts AC or +/−DC, at a low fixed current. In addition to the wide input voltage range accepted at a uniform low current value, very high voltage isolation is provided between the external voltage and the low voltage digital logic circuit, and elimination of ground loops and common mode noise.
Abstract:
A single common load is provided for both space heating of the interior of an enclosure and for testing of a back-up battery therewith. The common load is coupled to either the battery for momentary load testing thereof, or to a power supply when heat is to be generated by the load for space heating of an interior of an enclosure. Providing only a single load for both space heating and battery testing results in reduced component costs, space savings and simplification of connections and wiring harnesses required. Power resistors, active components such as transistors or MOSFETs, and/or resistive heat tracing may be used as the common load, and deposed within the interior of the enclosure.
Abstract:
Aspects of manual multi-phase voltage control are described. In one embodiment, a voltage regulator controller includes switches for coupling power from an energized phase to a de-energized phase. For example, the voltage regulator controller may include a first power switch electrically coupled to drive circuitry of a first voltage regulator, a first phase output voltage of a multi-phase power delivery system, and a second phase output voltage of the multi-phase power delivery system. In certain aspects, the first power switch selectively toggles an electrical coupling between the drive circuitry of the first voltage regulator and one of the first phase output voltage and the second phase output voltage. Powering a voltage regulator of a de-energized phase with power from an energized phase may peg the operation of the voltage regulator, as necessary, to maintain the balance of the power distribution system, for example.
Abstract:
A single common load is provided for both space heating of the interior of an enclosure and for testing of a back-up battery therewith. The common load is coupled to either the battery for momentary load testing thereof, or to a power supply when heat is to be generated by the load for space heating of an interior of an enclosure. Providing only a single load for both space heating and battery testing results in reduced component costs, space savings and simplification of connections and wiring harnesses required. Power resistors, active components such as transistors or MOSFETs, and/or resistive heat tracing may be used as the common load, and deposed within the interior of the enclosure.
Abstract:
A double hinge assembly is described including a center wing having a first center wing barrel portion and a second center wing barrel portion, a barrel pin, and a swing panel including a swing panel barrel portion, where the swing panel barrel portion and the second center wing barrel portion are adjoined by the barrel pin to form a first pivot about a first axis. Further aspects of the double hinge assembly include the first and second center wing barrel portions being formed respectively at two opposing edges of the center wing, the center wing including a tab at one end, and the tab projecting perpendicularly outward with respect to major sides of the center wing.