Abstract: An optoelectronic package and a method for producing the optoelectronic package are provided. The optoelectronic package includes a carrier, a photonic device, a first encapsulant and a second encapsulant. The photonic device is disposed on the carrier. The first encapsulant covers the carrier and is disposed around the photonic device. The second encapsulant covers the first encapsulant and the photonic device. The first encapsulant has a topmost position and a bottommost position, and the topmost position is not higher than a surface of the photonic device.

Abstract: A server power transformer structure includes: a first iron core, a first projection being configured thereon; an axle body, in combination with the first projection, and configured with four copper foils and first spools, each copper foil, first spool being respectively put around the axle body, at least one first, second, third, fourth connection portion being extended from bottoms of the respective copper foils, and the first spool being sandwiched between each two adjacent copper foils; a second iron core, a second projection being configured thereon, a second spool being put around the second projection, and the second projection being in combination with the axle body; and a solder bar, having a combination portion, first and second through holes, the combination portion being in electric connection with a main board, the connection portions being inserted in and bonded with the respective through holes.

Abstract: A hot-pluggable uninterruptible power supply module includes at least one first power supply device, each first power supply device having an end electrically connected with an electronic system and another end electrically connected with an external AC power source; at least one hot-swapping uninterruptible power supply module, each hot-swapping uninterruptible power supply module including a control module, a second power supply device, and a battery that is electrically connected with the second power supply device. The second power supply device is electrically connected with the control module. The control module of each hot-swapping uninterruptible power supply module is electrically connected with each first power supply device. The second power supply device of each hot-swapping uninterruptible power supply module is electrically connected with the electronic system and an end of each first power supply device.

Abstract: An active isolation switch according to this invention includes a field effect transistor (FET), a first bi-polar transistor and a second bi-polar transistor, and an emitter bias resistor. The FET is formed with a source, a gate, and a drain. The first bi-polar transistor is formed with a first emitter, a first base, and a first collector; the first emitter is connected to the source and the first collector is connected to the gate. The second bi-polar transistor is formed with a second emitter, a second base, and a second collector, the second base is connected to the first base, and the second collector is connected to the drain. The emitter bias resistor is formed with a first terminal and a second terminal; the first terminal is connected to the emitter of the second bi-polar transistor and the second terminal is connected to the emitter of the first bi-polar transistor.

Abstract: A hot-pluggable uninterruptible power supply module includes at least one first power supply device, each first power supply device having an end electrically connected with an electronic system and another end electrically connected with an external AC power source; at least one hot-swapping uninterruptible power supply module, each hot-swapping uninterruptible power supply module including a control module, a second power supply device, and a battery that is electrically connected with the second power supply device. The second power supply device is electrically connected with the control module. The control module of each hot-swapping uninterruptible power supply module is electrically connected with each first power supply device. The second power supply device of each hot-swapping uninterruptible power supply module is electrically connected with the electronic system and an end of each first power supply device.

Abstract: A system comprises a plurality of the hot swapping type uninterruptible power supply module and a plurality of conventional power supply. A HSUPS comprises a battery module and a controller module. A conventional power supplies is connected with an external AC power source and converts into DC voltage to provide power to the electronic system and/or to charge the HSUPS when necessary. The battery module holds the energy needed to power the electronic system during the absences of a conventional power supply and/or external AC power source. The controller module controls the operation to charge the battery, discharge the battery, switch off the HSUPS, or be standby. The controller module has the ability to detect for any failure event. The HSUPS provides power to the electronic system when the external AC power source is interrupted and when all of the conventional power supplies are removed from the system.

Abstract: The commutator for a bridgeless PFC circuit is characterized in that a synchronous half-wave rectifier is connected between a bridgeless PFC boost circuit and an AC power source and is coupled to the two terminals of the AC power source. The synchronous half-wave rectifier contains a first synchronous transistor, a second synchronous transistor, and a control circuit.

Abstract: The power supply comprises a bridge rectifier connected to an AC source; a boost converter series-connected to the bridge rectifier comprising an inductance coil; a filter capacitor series-connected to the boost converter; a DC/DC converter connected to a load; a hold-up-time enhancer connected to and positioned between the filter capacitor and the DC/DC converter; and a virtual by-pass system parallel-connected to the hold-up-time enhancer comprising an induction coil inductively coupled to the inductance coil of the boost converter. As such, voltage is induced on the induction coil by the inductance coil in the boost converter and the virtual by-pass system parallel-connected to the hold-up-time enhancer is thereby turned on and off.

Abstract: The redundant power supply UPS module for an electronic system contains at least a first power supply electrically connected to an external AC power source and converting the AC electricity from the AC power source to DC electricity for powering the electronic system; at least a second power supply; a battery electrically connected to the second power supply for providing DC electricity to the second power supply; and a control module electrically connected to the first and second power supplies and capable of detecting the stored electricity of the battery and power interruption from the AC power source, and capable of controlling the charge and discharge of the battery.

Abstract: The commutator for a bridgeless PFC circuit is characterized in that a synchronous half-wave rectifier is connected between a bridgeless PFC boost circuit and an AC power source and is coupled to the two terminals of the AC power source. The synchronous half-wave rectifier contains a first synchronous transistor, a second synchronous transistor, and a control circuit.

Abstract: The power supply comprises a bridge rectifier connected to an AC source; a boost converter series-connected to the bridge rectifier comprising an inductance coil; a filter capacitor series-connected to the boost converter; a DC/DC converter connected to a load; a hold-up-time enhancer connected to and positioned between the filter capacitor and the DC/DC converter; and a virtual by-pass system parallel-connected to the hold-up-time enhancer comprising an induction coil inductively coupled to the inductance coil of the boost converter. As such, voltage is induced on the induction coil by the inductance coil in the boost converter and the virtual by-pass system parallel-connected to the hold-up-time enhancer is thereby turned on and off.