Abstract: The present disclosure relates to a valve tray for use in a chemical process column. The valve tray includes a plurality of apertures formed therein. A plurality of valves are maintained in a spaced relationship relative to individual apertures of the plurality of apertures. An area of the individual apertures is less than an area of individual valves of the plurality of valves.

Abstract: A voltage regulation and battery charging system is provided. The system may include a switching regulator selection control circuit, two switching regulator controller circuits, two power transistors, a common synchronous transistor, and a common LC circuit. The two switching regulator controller circuits may synchronously switch the two power transistors and the one common synchronous transistor. One of the switching regulator controller circuits may receive a voltage from an AC adapter and the other may receive a voltage from a USB port. Further, the switching regulation selection control circuit selects which of the two switching regulator controller circuits controls the regulation of the system output voltage employing the common LC filter.

Abstract: In an embodiment of the present invention, a charge voltage is coupled between the positive and negative terminals of a rechargeable battery, to charge the battery. The charge voltage is disconnected for a predetermined relax time period. A rechargeable battery voltage is present between the positive and negative terminals of the battery during the relax time. The battery voltage is measured and compared to a predetermined target voltage that is associated with a sample time. The comparison is then used to determine if the battery is charged.

Abstract: In an embodiment of the present invention, a charge voltage is coupled between the positive and negative terminals of a rechargeable battery, to charge the battery. The charge voltage is disconnected for a predetermined relax time period. A rechargeable battery voltage is present between the positive and negative terminals of the battery during the relax time. The battery voltage is measured and compared to a predetermined target voltage that is associated with a sample time. The comparison is then used to determine if the battery is charged.

Abstract: The theft protection system includes a base unit which is sufficiently compact that it may be positioned in a pocket of a golf bag and sense unauthorized removal thereof by a thief. The base unit has a housing containing a tilt sensor which includes an electrically conducting ball positioned within a hemispherically split chamber which in response to tilt or other movement of the sensor (and golf bag) rolls into a position in which it allows current to flow through the sensor and into either just an alarm in a first embodiment or into both an alarm and a transmitter in a second embodiment. The transmitter emits a signal to a remote unit which is sufficiently compact that it may be carried by a user and which includes a receiver and an auditory or vibration alarm. The receiver activates the auditory or vibration alarm in response to receipt of the signal from the transmitter thereby alerting the user to theft or attempted theft of the golf bag.