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 41/14 (2006.01)

Patent

CA 2542562

The present invention relates to an electronic ballast for a lamp having a bridge circuit, which comprises at least one first switch (S1) and a second switch (S2), a center point (M) of the bridge circuit being defined between the first switch (S1) and the second switch (S2), said center point (M) being coupled on one side to a reference potential via the series circuit comprising a first capacitor (C1) and a diode (D2) and on the other side to a first connection (12) for the lamp (La) via an inductance (L1); a control unit (10) for the purpose of driving the first switch (S1) and the second switch (S2), the control unit (10) having a supply connection (VCC) which is coupled to the connection point between the first capacitor (C1) and the diode (D2), the voltage across the supply connection (VCC) being limited in terms of its amplitude, and having a measurement signal input (16) for the purpose of feeding a measurement signal (U C13) to the control unit (10); the measurement signal input (16) being coupled to the connection point between the first capacitor (C1) and the diode (D2).

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