Abstract: An apparatus and method for initializing electrical devices based on a voltage level. The voltage level may be modified to a particular setting based on the availability of power supply components, such as AC to DC rectifiers. Depending upon the availability of the power supply components, a control system may alter output voltage to a particular level. The components receiving power may be coupled to voltage dividers, where the voltage dividers are configured to modify an input voltage to cause or prevent the input voltage from rising above an initialization level for the particular component. The output voltage may be set by the control system such that a number of components that experience a voltage rise above an initialization threshold correspond to the number of available power supply components.

Abstract: Embodiments of a circuit, which includes a device and a switch, which is electrically coupled to the device, to control power applied to the device, are described. This switch includes a control terminal, which controls the switch, and two other terminals, which can receive power to be applied to the device. Moreover, the circuit is configured to apply a voltage to the control terminal to ensure the switch remains open when a supply voltage is applied to one of the two other terminals while powering-up the circuit, thereby preventing spurious application of the supply voltage to the device.

Abstract: A Compact Peripheral Component Interconnect (CPCI) system includes a circuit board with a front card (e.g., motherboard) coupled to a power supply via the circuit board. The CPCI system is adapted to provide for the dynamic control and change of power sequences during the front card's lifetime. That is, as power sequencing requirements evolve, change or deviate from what was the standard, the present extended front card can automatically evolve, change or deviate from what was the standard. The front card may also control and change power sequences without requiring modification to be made to the hardware of the front card.

Abstract: A Compact Peripheral Component Interconnect (CPCI) system includes a circuit board with a front card (e.g., motherboard) coupled to a power supply via the circuit board. The CPCI system is adapted to provide for the dynamic control and change of power sequences during the front card's lifetime. That is, as power sequencing requirements evolve, change or deviate from what was the standard, the present extended front card can automatically evolve, change or deviate from what was the standard. The front card may also control and change power sequences without requiring modification to be made to the hardware of the front card.

Abstract: A Compact Peripheral Component Interconnect (CPCI) system includes a circuit board with a front card (e.g., motherboard) coupled to a transition card via the circuit board. The CPCI system is adapted to provide for the dynamic replacement of the front card connected with a Small Computer System Interface (SCSI) device. The CPCI system includes a transition card that is adapted to provide the termination at the SCSI bus extremity (end) when its corresponding front card is removed. Preferably, the transition card allows for termination on its corresponding front card and not on the transition card when both the front card and the transition card are present (normal operating mode). The transition card's transition termination features are automatically enabled upon extraction of its corresponding front card and automatically disabled upon insertion of its corresponding front card.