Electronic ballast for a lamp

Details Electronic ballast for a lamp Electronic ballast for a lamp

H - Electricity

05

B

H05B 37/00 (2006.01) H05B 41/16 (2006.01)

Patent

CA 2542567

The present invention relates to an electronic ballast for a lamp having a DC voltage connection (14), at which a DC voltage can be made available; a switching unit (10) which has a supply voltage connection (12), the DC voltage connection (14) being coupled to the supply voltage connection (12) of the switching unit (10), and a first capacitor (C1) being coupled between the supply voltage connection (12) and a reference potential; an AC voltage connection (16), at which a voltage can be made available which has at least one AC component, the series circuit comprising a first nonreactive resistor (R1) and a first diode (D1) as well as a second nonreactive resistor (R2) being coupled between the AC voltage connection (16) and the supply voltage connection (12), a connection point being defined between the first diode (D1) and the second nonreactive resistor (R2), and a second capacitor (C2) being coupled between said connection point and the reference potential, and the first capacitor (C1) and the second nonreactive resistor (R2) being dimensioned such that the average voltage drop across the second nonreactive resistor (R2) is greater than or equal to the average voltage drop across the first capacitor (C1).

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