ILLUMINATION DEVICE HAVING A LIGHT EMITTING SOURCE OPERATED VIA A CLAMPED SERIES RESONATOR CONVERTER

An illumination device is provided. The illumination device includes a light emitting source and a clamped series resonant converter (CSRC) coupled thereto. The CSRC includes a first rectifier to generate a direct current (DC) using an alternating current (AC) voltage. The CSRC further includes an i...

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Bibliographische Detailangaben
Hauptverfasser: GLASER John Stanley, Ramabhadran Ramanujam
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An illumination device is provided. The illumination device includes a light emitting source and a clamped series resonant converter (CSRC) coupled thereto. The CSRC includes a first rectifier to generate a direct current (DC) using an alternating current (AC) voltage. The CSRC further includes an inverter having a switching leg including a plurality of switches coupled in series and a diode leg having a plurality of diodes coupled in series. The diode leg is coupled in parallel with the switching leg. Furthermore, the inverter includes an inductor coupled to the switching leg and a capacitor coupled to the diode leg. The CSRC also includes a transformer coupled to the inverter, where a voltage developed across a primary winding of the transformer causes automatic power factor correction by drawing an input current flowing through the CSRC that is proportional to the AC voltage.