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| Number | Title | Issue Date |
| 7375995 | Power factor correction circuit A power factor correction circuit used for regulating the phase of a DC current outputted from a rectifier unit in a power supply includes an energy inductor, an output diode, a switch unit, a pulse width modulation unit, a sensing resistor, and a converter transfor... | 05/20/2008 |
| D559777 | Power supply | 01/15/2008 |
| 7268658 | Transformer having leakage inductance control structure A transformer having a leakage inductance control structure includes a primary coil, a secondary coil formed at a selected coil ratio relative to the primary coil to transform voltage and output electric power, and a leakage inductance control coil which is wound on... | 09/11/2007 |
