Koninklijke Philips Corporation N.v.

Petrus Cornelius Maria Marien

Antonius Adrianus Maria Marinus

Christofher Daniel Charles Hooijer

In an upconverter comprising a choke, a switching element and a diode, the switching element is controlled in such a way that the time interval during which the switching element is non-conducting is proportional to the time interval during which the diode is conducting. The upconverter has a high power factor for a wide range of the amplitude of the line voltage and a wide range of power taken at the output of the upconverter.

AC-DC converter

In an upconverter operating in the transient mode, an offset signal is added to the signal at the current sensing pin of the control IC. The upconverter generates a comparatively low THD even if the supply voltage and/or the power supplied by the upconverter are varied over a wide range.

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Eindhoven, Netherlands

Petrus Cornelius Maria Marien