IN SWITCHING POWER SUPPLIES AND REGULATORS
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| Forward power converter controllers A method of controlling a resonant discontinuous forward converter (RDFC), said converter including a transformer with primary and secondary matched polarity windings and a switch to, in operation, cyclically switch DC power to said primary winding of said transformer, said converter further having a DC output coupled to said secondary... Publ.Date : Wed, 8 Oct 2008 13:11:14 -0700 Dc/dc converter Primary and secondary coils are provided in the first through section and a coil group is also provided in the second through section. Hence, the surface area over which the coil group extends within a plane which is perpendicular to the through sections is greater than in the case where... Publ.Date : Wed, 8 Oct 2008 13:11:14 -0700 Apparatus for converting an electrical current and method for reducing the load-change stress of power semiconductor units in the high-voltage energy distribution and transmission sector An apparatus for converting an electrical current in a high-voltage energy distribution and transmission system has one or more current converter valves with a series circuit of a plurality of power semiconductor units. A cooler cools the power semiconductor units. Temperature deviations of the power semiconductor units can be decreased... Publ.Date : Wed, 8 Oct 2008 13:11:14 -0700 Method and apparatus for quasi-resonant current mode power conversion A method and apparatus to magnetically couple AC power from the high voltage electric utility power line current induced magnetic field over a wide voltage and current range to provide a low voltage, low current DC power supply useful in powering other remotely located or limited accessibility circuitry requiring low... Publ.Date : Wed, 8 Oct 2008 13:11:14 -0700 Switched capacitor converters A switched capacitor converter has a supply voltage input, an output circuit with one or more load capacitors, a semiconductor switch network. The switch network is connected at a switch junction point and across the voltage input, and has one or more pairs of said first and second switches. Each... Publ.Date : Wed, 8 Oct 2008 13:11:14 -0700 Active network filter The invention relates to a supply device (13) which feeds a consumer (7) with power by means of a supply network (12). Said supply device (13) fulfils both the function of a power supply and the function of a network filter, an optimum working point to be adjustable in terms... Publ.Date : Wed, 8 Oct 2008 13:11:14 -0700 System and method for a bridgeless power supply A system and method for a bridgeless power supply is disclosed. The bridgeless power supply includes a digital control module that controls a first switch, a second switch, and a transistor, thereby the bridgeless power supply rectifies an alternating current (AC) variable input voltage and regulates a direct current (DC)... Publ.Date : Wed, 8 Oct 2008 13:11:14 -0700 Voltage converter capable of correctly enabling secondary converting module coupled to output port of voltage converter by utilizing slope indication signal having different pulse amplitudes representative of different slope values A method for converting an input voltage signal into an output voltage signal is disclosed. The method includes: providing a primary converting module and coupling the primary converting module to an input port of the voltage converter; providing a secondary converting module having a second electronic induction device and a... Publ.Date : Wed, 8 Oct 2008 13:11:14 -0700 Direct-current converter A direct-current converter includes a high-frequency converting circuit converting voltage of a direct-current power source to alternating-current voltage, a transformer having primary and secondary windings P, S and a rectification smoothing circuit rectifying and smoothing voltage induced in the secondary winding. This converting circuit includes other transformer having first and... Publ.Date : Wed, 8 Oct 2008 13:11:14 -0700 Control system for a voltage converter and method A control arrangement (1) for a voltage converter for converting a first DC voltage (UBAT) into a second DC voltage (U-G) comprises a first input (3) that is provided for coupling to a means of sensing a first current (I1) on the primary side of the transformer (11). The output... Publ.Date : Wed, 8 Oct 2008 13:11:14 -0700 RSS to HTML |
