Abstract: A DC power supply may use an input supply surge protection circuit that may be robust against positive and negative power surges. DC power may be provided through a first unidirectional circuit component such as a diode or selectively controlled MOSFET coupled in parallel with a transient voltage suppressor or Zener diode. The first unidirectional circuit component may have a first voltage rating and the transient voltage suppressor or Zener diode may have a second voltage rating lower than the first voltage rating. This may allow current to flow backward over the transient voltage suppressor or Zener diode to protect the first unidirectional circuit component from exposure to voltage beyond the first voltage rating in a power surge.

Abstract: A DC power supply may use an input supply surge protection circuit that may be robust against positive and negative power surges. DC power may be provided through a first unidirectional circuit component such as a diode or selectively controlled MOSFET coupled in parallel with a transient voltage suppressor or Zener diode. The first unidirectional circuit component may have a first voltage rating and the transient voltage suppressor or Zener diode may have a second voltage rating lower than the first voltage rating. This may allow current to flow backward over the transient voltage suppressor or Zener diode to protect the first unidirectional circuit component from exposure to voltage beyond the first voltage rating in a power surge.

Abstract: A method for managing the delivery of power for a plurality of devices includes allocating a power limit for each of the plurality of devices and providing power to at least one of the plurality of devices. The method also includes, in response to the providing of power, measuring the amount of power utilized by each of at least one of the at least one of the plurality of devices and determining that the amount of power exceeds the power limit for the device.

Abstract: Various systems and methods for providing a pulse width modulation soft start feature in a redundant power supply are disclosed. One method involves comparing an input voltage, which is received from a load unit, to a threshold voltage. If the input voltage is less than the threshold voltage, a PWM signal is used to control a switch, which is configured to electrically couple a redundant power supply to the load unit when closed. The duty cycle of the PWM signal is then modified according to a predetermined sequence.

Abstract: A method for managing the delivery of power for a plurality of devices includes allocating a power limit for each of the plurality of devices and providing power to at least one of the plurality of devices. The method also includes, in response to the providing of power, measuring the amount of power utilized by each of at least one of the at least one of the plurality of devices and determining that the amount of power exceeds the power limit for the device.

Abstract: A method for managing the delivery of power for a plurality of devices includes allocating a power limit for each of the plurality of devices and providing power to at least one of the plurality of devices. The method also includes, in response to the providing of power, measuring the amount of power utilized by each of at least one of the at least one of the plurality of devices and determining that the amount of power exceeds the power limit for the device.

Abstract: Various systems and methods for providing a pulse width modulation soft start feature in a redundant power supply are disclosed. One method involves comparing an input voltage, which is received from a load unit, to a threshold voltage. If the input voltage is less than the threshold voltage, a PWM signal is used to control a switch, which is configured to electrically couple a redundant power supply to the load unit when closed. The duty cycle of the PWM signal is then modified according to a predetermined sequence.

Abstract: According to one embodiment of the invention, an integrated jack unit is provided. The integrated jack unit includes a housing. The integrated jack unit also includes a jack positioned at least in part in the housing. The integrated jack unit also includes a power controller positioned in the housing and coupled to the jack by a line. The line is designated for coupling with a transformer. The integrated jack unit also includes a pin protruding outwardly from the housing. The pin is electrically coupled to the jack through the power controller and the line. The pin is positioned to receive power for the jack from a printed circuit board.