Patent ID: 9220159
Filing Date: 2015-12-22
Classification: H05B

Abstract:
1. An electronic ballast for lighting applications, the electronic ballast comprising: a first charge pump having an input capacitor charged with a supply current drawn from a power source by application of a charging voltage to the input capacitor, a magnitude of the supply current being proportional to a magnitude of the charging voltage; and a voltage booster for generating a boost voltage, which is used to augment the charging voltage, thereby increasing the current drawn from the power source, wherein the voltage booster comprises a secondary winding of a transformer configured to generate the boost voltage, wherein a primary winding of the transformer is energised by a source of alternating voltage generated within the electronic ballast, wherein the secondary winding is coupled to an anode of a diode via a second capacitor, and wherein a cathode of the diode is connected to the input capacitor.