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| Application No. | Application Title | Issue Date |
| 20110317461 | POWER CONVERTER A synchronization detection PLL section generates an ON synchronized signal formed as a result of synchronization control based on a diode ON synthesized signal. The synchronization detection PLL section also generates an OFF synchronized signal formed as a result of sy... | 12/29/2011 |
| 20110109162 | Converter device and uninterruptible power supply provided with such a device A converter to supply an AC voltage and current from three DC voltages comprising two switching units provided with first switching means connected between an input and a switching output, said converter comprising, for each switching unit, second switching means connec... | 05/12/2011 |
| 20100182814 | BIDIRECTIONAL DC-DC CONVERTER Provided is a bidirectional DC/DC converter which can control a boost voltage in a wide range. The DC/DC converter includes: three series circuits formed by a first to a sixth switch, each two of which are connected in series between a plus terminal and a minus terminal... | 07/22/2010 |
| 20100101936 | POWER SUPPLY APPARATUS FOR A CAPACITIVIE LOAD The invention provides a power supply apparatus for supplying electric power to a capacitive load. The apparatus has a transformer, a positive half-period driver and a negative half-period driver supplying positive and negative half-periods of voltage to the first coil.... | 04/29/2010 |
| 20090322086 | DRIVE CIRCUIT AND METHOD FOR INVERTERS OF WIND ENERGY INSTALLATIONS A converter for a wind energy installation and a method. The converter includes an inverter which drives a generator via a plurality of phases and an intermediate circuit having an intermediate-circuit voltage between an upper and a lower intermediate-circuit potential.... | 12/31/2009 |
| 20090184603 | DRIVE CIRCUIT A drive circuit includes a plurality of output drive terminals and a plurality of push-pull circuit stages. Each of the push-pull circuit stages includes a pair of complementary transistors having a common terminal connected to a respective output drive terminal. The dr... | 07/23/2009 |
| 20090046492 | Inverter An inverter (1) for feeding electric power into a utility grid (7) or into a load is described. The inverter (1) contains two direct voltage inputs (2, 3), one first intermediate circuit (8) connected thereto and comprising two series ... | 02/19/2009 |
| 20090046491 | Inverter An inverter (1) for feeding electric power into a utility grid (7) or into a load is described. The inverter (1) contains direct voltage inputs (2, 3), one first intermediate circuit (8) connected thereto and comprising two series conn... | 02/19/2009 |
| 20080239775 | Power Converter Apparatus and Methods Using Neutral Coupling Circuits with Interleaved Operation A power converter apparatus, such as an uninterruptible power supply (UPS), includes an inverter having an input coupled to a first DC bus and a second DC bus and configured to generate an AC output with respect to a neutral terminal at a phase output terminal thereof. ... | 10/02/2008 |
| 20080055952 | DC to AC Power Converter A DC to AC power converter is disclosed. The power converter comprises four power-switching devices, two diodes, a step-up and isolation transformer, a capacitor-choke filter and a controller. Two power-switching devices located on the primary side of the transformer ar... | 03/06/2008 |
| 20070291523 | Controller Ic, Dc-Ac Conversion Apparatus, And Parallel Running System Of Dc-Ac Conversion Apparatuses A DC power source voltage is supplied to a center tap of a primary winding, and first and second semiconductor switches alternately turned on are disposed between each of both ends of the primary winding and a common potential point, and a current flowing through a load... | 12/20/2007 |
| 20070121357 | Apparatus for a power supply with brownout protection and the protecting method for the same An apparatus for a power supply with brownout protection and the method thereof are proposed. As a brownout condition occurs, the apparatus informs at least one microprocessor to process the shutdown process timely. The apparatus includes a power factor correction (PFC)... | 05/31/2007 |
