Abstract: Example implementations relate to a variable soft start device. For example, in an implementation, the variable soft start device may set the capacitance of a variable capacitance circuit connected to a soft start pin of the electronic fuse. The variable soft start device may read a power-good signal from the electronic fuse and determine the capacitance to set according to the power-good signal.

Abstract: A controller, comprising: a processing resource; and a memory resource storing machine-readable instructions to cause the processing resource to: activate a detection signal to enable a transistor coupled to the controller; determine a voltage associated with a plurality of hot swap controllers; and determine, in view of the voltage, a quantity of hot swap controllers included in the plurality of hot swap controllers.

Abstract: Various examples provide systems and methods in which a capacitor is charged by an active first power factor correction module and a voltage across the capacitor is determined while the second power factor correction module is exclusively active. A health state of the second power factor correction module may be determined based on the determined voltage across the capacitor.

Abstract: An example system includes a failure detection circuit. The failure detection circuit is to detect a failure of a first power source electrically coupled to a first load. The failure detection circuit is to output a first signal indicating the detection of the failure of the first power source. The system also includes a current regulating circuit. The current regulating circuit is electrically coupled to the failure detection circuit. The current regulating circuit is to electrically couple a second power source to the first load based on the first signal output by the failure detection circuit. The current regulating circuit is to restrict a first current from the second power source.

Abstract: Various examples provide systems and methods in which a capacitor is charged by an active first power factor correction module and a voltage across the capacitor is determined while the second power factor correction module is exclusively active. A health state of the second power factor correction module may be determined based on the determined voltage across the capacitor.

Abstract: An example system includes a control interface and a device coupled to the control interface. The control interface may generate a parameter. The device may receive the parameter from the control interface, generate a switching waveform and current reference, adjust the switching waveform to generate an output current, and adjust the output current by using an error amplifier to provide an output current that conforms to at least one parameter.

Abstract: A controller, comprising: a processing resource; and a memory resource storing machine-readable instructions to cause the processing resource to: activate a detection signal to enable a transistor coupled to the controller; determine a voltage associated with a plurality of hot swap controllers; and determine, in view of the voltage, a quantity of hot swap controllers included in the plurality of hot swap controllers.

Abstract: An example system includes a control interface and a device coupled to the control interface. The control interface may generate a parameter. The device may receive the parameter from the control interface, generate a switching waveform and current reference, adjust the switching waveform to generate an output current, and adjust the output current by using an error amplifier to provide an output current that conforms to at least one parameter.

Abstract: An example apparatus includes a windowing component. The windowing component may set a first voltage level as an upper bound for a voltage window and set a second voltage level as a lower bound for the voltage window. The windowing component may modulate an input signal to have a maximum magnitude less than the upper bound for the voltage window and a minimum magnitude greater than the lower bound for the voltage window.

Abstract: Example implementations relate to a variable soft start device. For example, in an implementation, the variable soft start device may set the capacitance of a variable capacitance circuit connected to a soft start pin of the electronic fuse. The variable soft start device may read a power-good signal from the electronic fuse and determine the capacitance to set according to the power-good signal.

Abstract: Examples herein disclose a system comprising a comparator circuit and a controller. The comparator circuit generates a waveform of an input source. The controller measures a period of time associated with the waveform and determines an alternating current (AC) characteristic of the input source based on the measured period of time.

Abstract: An example system includes a failure detection circuit. The failure detection circuit is to detect a failure of a first power source electrically coupled to a first load. The failure detection circuit is to output a first signal indicating the detection of the failure of the first power source. The system also includes a current regulating circuit. The current regulating circuit is electrically coupled to the failure detection circuit. The current regulating circuit is to electrically couple a second power source to the first load based on the first signal output by the failure detection circuit. The current regulating circuit is to restrict a first current from the second power source.