Abstract: An electrical device may include an electrical load that draws current, a charge pump that provides the current to the electrical load, and clock circuitry. The charge pump may include an amplifier, a first fly capacitor, a second fly capacitor, and multiple switches. A first set of the switches may couple the first fly capacitor between a supply and ground based on a first set of clock signals and between the amplifier and the electrical load based on a second set of clock signals. A second set of the switches may couple the second fly capacitor between the supply and ground based on the second set of clock signals and between the amplifier and the electrical load based on the first set of clock signals. The clock circuitry may alternate between generating the first set of clock signals and the second set of clock signals based on the current.

Abstract: An electrical device may include an electrical load that draws current, a charge pump that provides the current to the electrical load, and clock circuitry. The charge pump may include an amplifier, a first fly capacitor, a second fly capacitor, and multiple switches. A first set of the switches may couple the first fly capacitor between a supply and ground based on a first set of clock signals and between the amplifier and the electrical load based on a second set of clock signals. A second set of the switches may couple the second fly capacitor between the supply and ground based on the second set of clock signals and between the amplifier and the electrical load based on the first set of clock signals. The clock circuitry may alternate between generating the first set of clock signals and the second set of clock signals based on the current.

Abstract: An in-rush current controller to turn-on a semiconductor output switch is described. The output switch is arranged in series with an output capacitor. The switch comprises a switch control port for controlling an output current and an output voltage. The controller comprises an amplifier to source or sink a switch control current to or from the switch control port, wherein the switch control current is dependent on an amplifier control current at an amplifier control port. The controller comprises a reference current source to provide a reference current at the amplifier control port, subject to a control signal indicating that the output switch is to be turned on. Furthermore, the controller comprises a feedback capacitor to provide a feedback current at the amplifier control port in dependence of a variation of the output voltage.

Abstract: An in-rush current controller to turn-on a semiconductor output switch is described. The output switch is arranged in series with an output capacitor. The switch comprises a switch control port for controlling an output current and an output voltage. The controller comprises an amplifier to source or sink a switch control current to or from the switch control port. The switch control current is dependent on an amplifier control current at an amplifier control port. The controller comprises a reference current source to provide a reference current at the amplifier control port, subject to a control signal indicating that the output switch is to be turned on. The controller comprises a feedback capacitor which is arranged to couple the output node to the amplifier control port, and to provide a feedback current at the amplifier control port in dependence of a variation of the output voltage.

Abstract: The invention relates generally to the conditioning of bowling lanes, and, more particularly to an apparatus and method for automatically applying a predetermined pattern of dressing fluid along the transverse and longitudinal dimensions of a bowling lane.

Abstract: A bowling lane conditioning machine is disclosed with circuitry that is operative to perform one or more of the following: dynamically updating a graphical representation of a lane dressing fluid pattern and/or zone, displaying confirmation that a selected component completed a desired function, displaying a log of activity, changing a language of text displayed on a display device, and displaying a graphical user interface with different menu options displayed differently. Also disclosed is a bowling lane conditioning machine with a display device located on a housing and an input device located on a handle, and/or with a first input device located on a handle and a second input device located on a housing. Further disclosed is bowling lane conditioning machine with two processors that operate independently from one another: one that controls a lane dressing fluid application system, and the other that provides a graphic user interface.